Material Strength: ${materialStrength.toFixed(2)} MPa (${getStrengthTypeText(strengthType)})

Applied Stress: ${appliedStress.toFixed(2)} MPa

Application Type: ${getApplicationTypeText(applicationType)}

`; // Add recommended value stressRecommended.innerHTML = `

For ${getApplicationTypeText(applicationType)} using ${getStrengthTypeText(strengthType)}, the recommended minimum safety factor is ${recommendedFoS}.

${getFoSComparisonText(fos, recommendedFoS)}

`; // Show results stressBasedResult.classList.remove('hidden'); // Position scale marker positionScaleMarker(fos, 'stress'); } function calculateLoadFoS() { // Clear any previous alerts loadBasedAlert.classList.add('hidden'); // Get input values const allowableLoad = parseFloat(allowableLoadInput.value); const appliedLoad = parseFloat(appliedLoadInput.value); const loadUnits = loadUnitsSelect.value; const applicationType = loadApplicationTypeSelect.value; // Validate inputs if (isNaN(allowableLoad) || allowableLoad <= 0) { showLoadAlert('Please enter a valid allowable load (greater than 0).'); return; } if (isNaN(appliedLoad) || appliedLoad <= 0) { showLoadAlert('Please enter a valid applied load (greater than 0).'); return; } // Calculate FoS const fos = allowableLoad / appliedLoad; // Get recommended FoS const recommendedFoS = recommendedSafetyFactors.load[applicationType]; // Display results loadFosValue.textContent = fos.toFixed(2); // Add interpretation updateLoadInterpretation(fos, recommendedFoS); // Add details loadDetails.innerHTML = `

Allowable Load: ${allowableLoad.toFixed(2)} ${loadUnits}

Applied Load: ${appliedLoad.toFixed(2)} ${loadUnits}

Application Type: ${getLoadApplicationTypeText(applicationType)}

`; // Add recommended value loadRecommended.innerHTML = `

For ${getLoadApplicationTypeText(applicationType)}, the recommended minimum safety factor is ${recommendedFoS}.

${getFoSComparisonText(fos, recommendedFoS)}

`; // Show results loadBasedResult.classList.remove('hidden'); // Position scale marker positionScaleMarker(fos, 'load'); } function positionScaleMarker(fos, type) { // Create a dynamic marker based on the FoS value const section = document.getElementById(`${type}-interpretation`); const scale = section.previousElementSibling; // First, remove any existing dynamic marker const existingMarker = scale.querySelector('.dynamic-marker'); if (existingMarker) { scale.removeChild(existingMarker); } // Calculate position (capped at 3.0 for display purposes) const cappedFos = Math.min(fos, 3.0); const position = (cappedFos / 3.0) * 100; // Create new marker const marker = document.createElement('div'); marker.className = 'scale-marker dynamic-marker'; marker.style.left = `${position}%`; marker.style.backgroundColor = '#000'; marker.style.width = '3px'; marker.style.height = '20px'; marker.style.top = '-6px'; // Add label const label = document.createElement('div'); label.className = 'scale-label'; label.textContent = fos.toFixed(2); label.style.fontWeight = 'bold'; marker.appendChild(label); scale.appendChild(marker); } function updateStressInterpretation(fos, recommendedFoS) { stressInterpretation.className = 'result-interpretation'; if (fos < 1.0) { stressInterpretation.classList.add('danger'); stressInterpretation.innerHTML = ` UNSAFE DESIGN: The component is expected to fail under the specified stress. The Factor of Safety is less than 1.0, indicating that the applied stress exceeds the material strength. Redesign is necessary. `; } else if (fos < 1.5) { stressInterpretation.classList.add('warning'); stressInterpretation.innerHTML = ` MINIMAL SAFETY MARGIN: The design has very little margin for error. This may be acceptable only for well-understood, non-critical applications with carefully controlled loads and high-quality materials. Consider redesigning for most applications. `; } else if (fos < recommendedFoS) { stressInterpretation.classList.add('warning'); stressInterpretation.innerHTML = ` BELOW RECOMMENDED VALUE: While the design has some safety margin, it's below the recommended value of ${recommendedFoS} for this application type. Consider design modifications to increase the safety factor. `; } else { stressInterpretation.classList.add('safe'); stressInterpretation.innerHTML = ` ACCEPTABLE DESIGN: The Factor of Safety meets or exceeds the recommended value of ${recommendedFoS} for this application. The design has an adequate safety margin against failure under the specified conditions. `; } } function updateLoadInterpretation(fos, recommendedFoS) { loadInterpretation.className = 'result-interpretation'; if (fos < 1.0) { loadInterpretation.classList.add('danger'); loadInterpretation.innerHTML = ` UNSAFE DESIGN: The component is expected to fail under the specified load. The Factor of Safety is less than 1.0, indicating that the applied load exceeds the allowable load. Redesign is necessary. `; } else if (fos < 1.5) { loadInterpretation.classList.add('warning'); loadInterpretation.innerHTML = ` MINIMAL SAFETY MARGIN: The design has very little margin for error. This may be acceptable only for well-understood, non-critical applications with carefully controlled loads. Consider redesigning for most applications. `; } else if (fos < recommendedFoS) { loadInterpretation.classList.add('warning'); loadInterpretation.innerHTML = ` BELOW RECOMMENDED VALUE: While the design has some safety margin, it's below the recommended value of ${recommendedFoS} for this application type. Consider design modifications to increase the safety factor. `; } else { loadInterpretation.classList.add('safe'); loadInterpretation.innerHTML = ` ACCEPTABLE DESIGN: The Factor of Safety meets or exceeds the recommended value of ${recommendedFoS} for this application. The design has an adequate safety margin against failure under the specified conditions. `; } } function getStrengthTypeText(type) { switch (type) { case 'yield': return 'Yield Strength'; case 'ultimate': return 'Ultimate Tensile Strength'; case 'fatigue': return 'Fatigue Strength'; case 'other': return 'Material Strength'; default: return 'Material Strength'; } } function getApplicationTypeText(type) { switch (type) { case 'general': return 'General Engineering'; case 'structures': return 'Building Structures'; case 'pressure': return 'Pressure Vessels'; case 'aircraft': return 'Aircraft Components'; case 'medical': return 'Medical Devices'; default: return 'General Engineering'; } } function getLoadApplicationTypeText(type) { switch (type) { case 'general': return 'General Engineering'; case 'structures': return 'Building Structures'; case 'lifting': return 'Lifting Equipment'; case 'bridges': return 'Bridges'; case 'automotive': return 'Automotive Components'; default: return 'General Engineering'; } } function getFoSComparisonText(fos, recommendedFoS) { if (fos < recommendedFoS) { return `Your calculated safety factor (${fos.toFixed(2)}) is below the recommended minimum.`; } else { return `Your calculated safety factor (${fos.toFixed(2)}) meets or exceeds the recommended minimum.`; } } function clearStressForm() { materialStrengthInput.value = ''; appliedStressInput.value = ''; strengthTypeSelect.value = 'yield'; applicationTypeSelect.value = 'general'; stressBasedResult.classList.add('hidden'); stressBasedAlert.classList.add('hidden'); } function clearLoadForm() { allowableLoadInput.value = ''; appliedLoadInput.value = ''; loadUnitsSelect.value = 'N'; loadApplicationTypeSelect.value = 'general'; loadBasedResult.classList.add('hidden'); loadBasedAlert.classList.add('hidden'); } function showStressAlert(message) { stressBasedAlert.textContent = message; stressBasedAlert.classList.remove('hidden'); } function showLoadAlert(message) { loadBasedAlert.textContent = message; loadBasedAlert.classList.remove('hidden'); } // PDF Generation Functions function downloadStressPDF() { window.jspdf.jsPDF = window.jspdf.jspdf.jsPDF; const { jsPDF } = window.jspdf; // Create new PDF document const doc = new jsPDF('p', 'mm', 'a4'); const pageWidth = doc.internal.pageSize.getWidth(); // Set colors and styles matching the tool const primaryColor = '#2e7d32'; const secondaryColor = '#01579b'; const textColor = '#333333'; // Add title doc.setFontSize(24); doc.setTextColor(primaryColor); doc.text('Factor of Safety Calculator Results', pageWidth / 2, 20, { align: 'center' }); // Add subtitle doc.setFontSize(16); doc.setTextColor(secondaryColor); doc.text('Stress-Based Analysis', pageWidth / 2, 30, { align: 'center' }); // Add date doc.setFontSize(10); doc.setTextColor(textColor); doc.text(`Generated on: ${new Date().toLocaleDateString()}`, pageWidth / 2, 38, { align: 'center' }); // Get values const materialStrength = parseFloat(materialStrengthInput.value); const appliedStress = parseFloat(appliedStressInput.value); const strengthType = strengthTypeSelect.value; const applicationType = applicationTypeSelect.value; const fos = materialStrength / appliedStress; const recommendedFoS = recommendedSafetyFactors.stress[applicationType][strengthType]; // Add FoS value doc.setFontSize(18); doc.setTextColor(primaryColor); doc.text('Factor of Safety:', 20, 55); doc.setFontSize(24); doc.setTextColor(textColor); doc.text(fos.toFixed(2), 100, 55); // Add safety assessment doc.setFontSize(14); doc.setTextColor(primaryColor); doc.text('Safety Assessment:', 20, 70); doc.setFontSize(12); if (fos < 1.0) { doc.setTextColor('#f44336'); // Red doc.text('UNSAFE DESIGN - Redesign is necessary', 20, 78); } else if (fos < recommendedFoS) { doc.setTextColor('#ff9800'); // Orange doc.text('BELOW RECOMMENDED VALUE - Consider design modifications', 20, 78); } else { doc.setTextColor('#4caf50'); // Green doc.text('ACCEPTABLE DESIGN - Meets safety requirements', 20, 78); } // Add input details doc.setFontSize(14); doc.setTextColor(primaryColor); doc.text('Input Details:', 20, 95); doc.setFontSize(12); doc.setTextColor(textColor); doc.text(`Material Strength: ${materialStrength.toFixed(2)} MPa (${getStrengthTypeText(strengthType)})`, 25, 103); doc.text(`Applied Stress: ${appliedStress.toFixed(2)} MPa`, 25, 111); doc.text(`Application Type: ${getApplicationTypeText(applicationType)}`, 25, 119); // Add recommendation doc.setFontSize(14); doc.setTextColor(primaryColor); doc.text('Recommended Minimum Safety Factor:', 20, 135); doc.setFontSize(12); doc.setTextColor(textColor); doc.text(`For ${getApplicationTypeText(applicationType)} using ${getStrengthTypeText(strengthType)},`, 25, 143); doc.text(`the recommended minimum safety factor is ${recommendedFoS}.`, 25, 151); if (fos < recommendedFoS) { doc.text(`Your calculated safety factor (${fos.toFixed(2)}) is below the recommended minimum.`, 25, 159); } else { doc.text(`Your calculated safety factor (${fos.toFixed(2)}) meets or exceeds the recommended minimum.`, 25, 159); } // Add explanation doc.setFontSize(14); doc.setTextColor(primaryColor); doc.text('Understanding Factor of Safety:', 20, 175); doc.setFontSize(10); doc.setTextColor(textColor); let explanation = [ 'Factor of Safety (FoS) is a design parameter used in engineering to ensure that a component', 'or system can withstand loads beyond the expected operating conditions. It is calculated as the', 'ratio of the maximum stress a structure can withstand to the expected maximum stress it will', 'experience during normal operation.', '', 'INTERPRETING FACTOR OF SAFETY VALUES:', '• FoS < 1.0: Design is unsafe. The component is expected to fail under the specified load.', '• FoS = 1.0: Borderline design. No margin for error.', '• 1.0 < FoS < 1.5: Minimal safety margin. May be acceptable for well-understood, non-critical applications.', '• 1.5 ≤ FoS < 2.0: Moderate safety margin. Generally acceptable for most controlled applications.', '• 2.0 ≤ FoS < 3.0: Good safety margin. Appropriate for typical engineering applications.', '• FoS ≥ 3.0: High safety margin. Used for critical applications or where uncertainty is high.' ]; let y = 185; explanation.forEach(line => { doc.text(line, 20, y); y += 6; }); // Add footer doc.setFontSize(10); doc.setTextColor(textColor); doc.text('Generated by Factor of Safety Calculator', pageWidth / 2, 280, { align: 'center' }); // Save the PDF doc.save('factor-of-safety-stress-results.pdf'); } function downloadLoadPDF() { window.jspdf.jsPDF = window.jspdf.jspdf.jsPDF; const { jsPDF } = window.jspdf; // Create new PDF document const doc = new jsPDF('p', 'mm', 'a4'); const pageWidth = doc.internal.pageSize.getWidth(); // Set colors and styles matching the tool const primaryColor = '#2e7d32'; const secondaryColor = '#01579b'; const textColor = '#333333'; // Add title doc.setFontSize(24); doc.setTextColor(primaryColor); doc.text('Factor of Safety Calculator Results', pageWidth / 2, 20, { align: 'center' }); // Add subtitle doc.setFontSize(16); doc.setTextColor(secondaryColor); doc.text('Load-Based Analysis', pageWidth / 2, 30, { align: 'center' }); // Add date doc.setFontSize(10); doc.setTextColor(textColor); doc.text(`Generated on: ${new Date().toLocaleDateString()}`, pageWidth / 2, 38, { align: 'center' }); // Get values const allowableLoad = parseFloat(allowableLoadInput.value); const appliedLoad = parseFloat(appliedLoadInput.value); const loadUnits = loadUnitsSelect.value; const applicationType = loadApplicationTypeSelect.value; const fos = allowableLoad / appliedLoad; const recommendedFoS = recommendedSafetyFactors.load[applicationType]; // Add FoS value doc.setFontSize(18); doc.setTextColor(primaryColor); doc.text('Factor of Safety:', 20, 55); doc.setFontSize(24); doc.setTextColor(textColor); doc.text(fos.toFixed(2), 100, 55); // Add safety assessment doc.setFontSize(14); doc.setTextColor(primaryColor); doc.text('Safety Assessment:', 20, 70); doc.setFontSize(12); if (fos < 1.0) { doc.setTextColor('#f44336'); // Red doc.text('UNSAFE DESIGN - Redesign is necessary', 20, 78); } else if (fos < recommendedFoS) { doc.setTextColor('#ff9800'); // Orange doc.text('BELOW RECOMMENDED VALUE - Consider design modifications', 20, 78); } else { doc.setTextColor('#4caf50'); // Green doc.text('ACCEPTABLE DESIGN - Meets safety requirements', 20, 78); } // Add input details doc.setFontSize(14); doc.setTextColor(primaryColor); doc.text('Input Details:', 20, 95); doc.setFontSize(12); doc.setTextColor(textColor); doc.text(`Allowable Load: ${allowableLoad.toFixed(2)} ${loadUnits}`, 25, 103); doc.text(`Applied Load: ${appliedLoad.toFixed(2)} ${loadUnits}`, 25, 111); doc.text(`Application Type: ${getLoadApplicationTypeText(applicationType)}`, 25, 119); // Add recommendation doc.setFontSize(14); doc.setTextColor(primaryColor); doc.text('Recommended Minimum Safety Factor:', 20, 135); doc.setFontSize(12); doc.setTextColor(textColor); doc.text(`For ${getLoadApplicationTypeText(applicationType)},`, 25, 143); doc.text(`the recommended minimum safety factor is ${recommendedFoS}.`, 25, 151); if (fos < recommendedFoS) { doc.text(`Your calculated safety factor (${fos.toFixed(2)}) is below the recommended minimum.`, 25, 159); } else { doc.text(`Your calculated safety factor (${fos.toFixed(2)}) meets or exceeds the recommended minimum.`, 25, 159); } // Add explanation doc.setFontSize(14); doc.setTextColor(primaryColor); doc.text('Understanding Factor of Safety:', 20, 175); doc.setFontSize(10); doc.setTextColor(textColor); let explanation = [ 'Factor of Safety (FoS) is a design parameter used in engineering to ensure that a component', 'or system can withstand loads beyond the expected operating conditions. For load-based analysis,', 'it is calculated as the ratio of the maximum allowable load to the expected applied load during', 'normal operation.', '', 'INTERPRETING FACTOR OF SAFETY VALUES:', '• FoS < 1.0: Design is unsafe. The component is expected to fail under the specified load.', '• FoS = 1.0: Borderline design. No margin for error.', '• 1.0 < FoS < 1.5: Minimal safety margin. May be acceptable for well-understood, non-critical applications.', '• 1.5 ≤ FoS < 2.0: Moderate safety margin. Generally acceptable for most controlled applications.', '• 2.0 ≤ FoS < 3.0: Good safety margin. Appropriate for typical engineering applications.', '• FoS ≥ 3.0: High safety margin. Used for critical applications or where uncertainty is high.' ]; let y = 185; explanation.forEach(line => { doc.text(line, 20, y); y += 6; }); // Add footer doc.setFontSize(10); doc.setTextColor(textColor); doc.text('Generated by Factor of Safety Calculator', pageWidth / 2, 280, { align: 'center' }); // Save the PDF doc.save('factor-of-safety-load-results.pdf'); } });