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scripts.js
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scripts.js
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var globalEffectiveRadius;
var globalEffectiveElasticity;
var globalContactRadius;
var globalContactWidth;
var globalIndentation;
var globalMaximumPressure;
var globalForce;
var globalContactType;
var globalOrientationType;
var globalCylinderLength;
var globalMisesCo;
var globalMisesDepth;
var globalShearCo;
var fPoisson;
var sPoisson;
var fradius;
var sradius;
function contactTypeFun(inputOption) {
globalContactType = inputOption;
if (inputOption == "4") {
document.getElementById("orientationList").style.display = "block";
orientationFun(document.getElementById("OrientationSelector").value);
document.getElementById("secondRadius").style.display = "block";
document.getElementById("effectiveRadius").style.display = 'table-row';
} else {
document.getElementById("orientationList").style.display = "none";
switch (inputOption) {
case "1":
document.getElementById('contactType').src = "pics/SpherePlane.PNG";
document.getElementById("secondRadius").style.display = "none";
document.getElementById("effectiveRadius").style.display = "none";
document.getElementById("cylinderLength").style.display = "none";
document.getElementById("pointContact").style.display = "table-row";
document.getElementById("lineContact").style.display = "none";
document.getElementById('indentationPicture').src = "pics/indentationSphere.svg";
document.getElementById('maxPressurePicture').src = "pics/maxPressureSphere.svg";
break;
case "2":
document.getElementById('contactType').src = "pics/SphereSphere.PNG";
document.getElementById("secondRadius").style.display = "block";
document.getElementById("effectiveRadius").style.display = 'table-row';
document.getElementById("cylinderLength").style.display = "none";
document.getElementById("pointContact").style.display = "table-row";
document.getElementById("lineContact").style.display = "none";
document.getElementById('indentationPicture').src = "pics/indentationSphere.svg";
document.getElementById('maxPressurePicture').src = "pics/maxPressureSphere.svg";
break;
case "3":
document.getElementById('contactType').src = "pics/CylinderPlane.PNG";
document.getElementById("secondRadius").style.display = "none";
document.getElementById("effectiveRadius").style.display = "none";
document.getElementById("cylinderLength").style.display = "block";
document.getElementById("pointContact").style.display = "none";
document.getElementById("lineContact").style.display = "table-row";
document.getElementById('indentationPicture').src = "pics/indentationLine.svg";
document.getElementById('maxPressurePicture').src = "pics/maxPressureLine.svg";
break;
case "5":
document.getElementById('contactType').src = "pics/Elliptical.PNG";
}
}
updateResults();
}
function orientationFun(inputOption) {
switch (inputOption) {
case "1":
document.getElementById('contactType').src = "pics/CylinderCylinderPerpendicular.PNG";
document.getElementById("cylinderLength").style.display = "none";
document.getElementById("pointContact").style.display = "table-row";
document.getElementById("lineContact").style.display = "none";
break;
case "2":
document.getElementById('contactType').src = "pics/CylinderCylinderParallel.PNG";
document.getElementById("cylinderLength").style.display = "block";
document.getElementById("pointContact").style.display = "none";
document.getElementById("lineContact").style.display = "table-row";
document.getElementById('indentationPicture').src = "pics/indentationLine.svg";
document.getElementById('maxPressurePicture').src = "pics/maxPressureLine.svg";
break;
}
updateResults();
}
function calculateEffectiveRadius() {
fradius = parseFloat(document.getElementById("firstRadius").value);
sradius = parseFloat(document.getElementById("secondRadiusValue").value);
if (globalContactType == "1" || globalContactType == "3") {
globalEffectiveRadius = fradius;
} else {
globalEffectiveRadius = fradius * sradius / (fradius + sradius);
// LaTeX --> \frac{1}{R_*} = \frac{1}{R_1} + \frac{1}{R_2}
}
return globalEffectiveRadius;
}
function calculateEffectiveElasticity() {
var felastic = parseFloat(document.getElementById("firstElastic").value);
var selastic = parseFloat(document.getElementById("secondElastic").value);
fPoisson = parseFloat(document.getElementById("firstPoisson").value);
sPoisson = parseFloat(document.getElementById("secondPoisson").value);
globalEffectiveElasticity = felastic * selastic / (selastic * (1 - Math.pow(fPoisson, 2)) + felastic * (1 - Math.pow(sPoisson, 2)));
// LaTeX --> \frac{1}{E_*} = \frac{1 - \nu_1^2}{E_1} + \frac{1 - \nu_2^2}{E_2}
return globalEffectiveElasticity;
}
function calculateContactRadius() {
if (globalContactType == "1" || globalContactType == "2" || (globalContactType == "4" && globalOrientationType == "1" && fradius == sradius)) {
globalContactRadius = Math.pow(3 * globalForce * globalEffectiveRadius / 1E3 / 4 / globalEffectiveElasticity / 1E9, (1 / 3)) * 1E6;
// LaTeX --> \sqrt[3]{\frac{3 F R_*}{4 E_*}}
} else {
globalContactRadius = NaN;
}
return globalContactRadius;
}
function calculateContactWidth() {
globalCylinderLength = parseFloat(document.getElementById("cylinderLengthValue").value);
globalContactWidth = 2 * Math.sqrt(globalForce * globalEffectiveRadius / 1E3 / Math.PI / globalCylinderLength * 1E3 / globalEffectiveElasticity / 1E9) * 1E6;
// LaTeX --> 2 \sqrt{\frac{F R_*}{\pi L E_*}}
return globalContactWidth;
}
function calculateIndentation() {
if (globalContactType == "3" || (globalContactType == "4" && globalOrientationType == "2")) {
globalIndentation = globalForce / Math.PI / globalEffectiveElasticity / 1E9 / globalCylinderLength * 1E3 * (Math.log(4 * Math.PI * globalEffectiveElasticity * 1E9 * globalEffectiveRadius / 1E3 * globalCylinderLength / 1E3 / globalForce) - 1) * 1E6;
// LaTeX --> \frac{F}{\pi E_* L} \left( \ln{\left( \frac{4 \pi E_* R_* L}{F} \right)} - 1 \right)
} else {
if (globalContactType == "1" || globalContactType == "2" || (globalContactType == "4" && globalOrientationType == "1" && fradius == sradius)) {
globalIndentation = Math.pow(globalContactRadius, 2) / globalEffectiveRadius / 1E3;
// LaTeX --> \frac{a^2}{R_*}
} else {
globalIndentation = NaN;
}
}
return globalIndentation;
}
function calculateMaximumPressure() {
if (globalContactType == "3" || (globalContactType == "4" && globalOrientationType == "2")) {
globalMaximumPressure = 2 * globalForce / Math.PI / globalCylinderLength * 1E3 / globalContactWidth * 1E6 / 1E6;
// LaTeX --> \frac{2 F}{\pi b L}
} else {
if (globalContactType == "1" || globalContactType == "2" || (globalContactType == "4" && globalOrientationType == "1" && fradius == sradius)) {
globalMaximumPressure = 3 * globalForce / 2 / Math.PI / Math.pow(globalContactRadius / 1E6, 2) / 1E6;
// LaTeX --> \frac{3 F}{2\pi R_*^2}
} else {
globalMaximumPressure = NaN;
}
}
return globalMaximumPressure;
}
function calculateMisesCo(inputPoisson) {
if (globalContactType == "3" || (globalContactType == "4" && globalOrientationType == "2")) {
if (inputPoisson < 0.1938) {
// document.getElementById('maxMisesPicture').src = "pics/maxMisesLineLow.svg";
globalMisesCo = 1 / Math.sqrt(1 + 4 * (inputPoisson - 1) * inputPoisson);
// LaTeX --> P_{max} \sqrt{1 + 4 \left( \nu -1 \right) \nu}
} else {
// document.getElementById('maxMisesPicture').src = "pics/maxMisesLineHigh.svg";
globalMisesCo = 1.164 + 2.975 * inputPoisson - 2.906 * Math.pow(inputPoisson, 2);
// LaTeX --> \frac{P_{max}}{1.164 + 2.975 \nu_i - 2.906 \nu_i^2}
}
} else {
if (globalContactType == "1" || globalContactType == "2" || (globalContactType == "4" && globalOrientationType == "1" && fradius == sradius)) {
// document.getElementById('maxMisesPicture').src = "pics/maxMisesSphere.svg";
globalMisesCo = 1.30075 + 0.87825 * inputPoisson + 0.54373 * Math.pow(inputPoisson, 2);
// LaTeX --> \frac{P_{max}}{1.30075 + 0.87825 \nu_i + 0.54373 \nu_i^2}
// globalMisesCo = 3 / (1 - 2 * inputPoisson);
} else {
globalMisesCo = NaN;
}
}
return globalMisesCo;
}
function calculateMisesDepth(inputPoisson) {
var zeta;
if (globalContactType == "3" || (globalContactType == "4" && globalOrientationType == "2")) {
if (inputPoisson < 0.1938) {
zeta = 0;
// LaTeX -->
} else {
zeta = 0.223 + 2.321 * inputPoisson - 2.397 * Math.pow(inputPoisson, 2);
// LaTeX -->
}
} else {
if (globalContactType == "1" || globalContactType == "2" || (globalContactType == "4" && globalOrientationType == "1" && fradius == sradius)) {
// globalMisesDepth = 0.48 * globalContactRadius;
var zeta = 0.38167 + 0.33136 * inputPoisson;
} else {
zeta = NaN;
}
}
return zeta;
}
function calculateShearCo(inputPoisson) {
// LaTeX --> \frac{\tau_{max}}{P_{max}} = \frac{1}{2} \left( \zeta \left( 1 + \nu \right) \text{ArcCot} \left( \zeta \right) - 1 - \nu + \frac{3}{2 \left( 1 + \zeta^2 \right)} \right)
if (globalContactType == "3" || (globalContactType == "4" && globalOrientationType == "2")) {
// globalShearCo = NaN;
if (inputPoisson < 0.2415) {
globalShearCo = 0.4767 * Math.pow(inputPoisson, 2) - 0.9302 * inputPoisson + 0.4976;
} else {
globalShearCo = 0.3003;
}
} else {
if (globalContactType == "1" || globalContactType == "2" || (globalContactType == "4" && globalOrientationType == "1" && fradius == sradius)) {
globalShearCo = 1 / (2.6013 + 1.7585 * inputPoisson + 1.0842 * Math.pow(inputPoisson, 2));
} else {
globalShearCo = NaN;
}
}
return globalShearCo;
}
function calculateShearDepth(inputPoisson) {
var zeta;
if (globalContactType == "3" || (globalContactType == "4" && globalOrientationType == "2")) {
// zeta = NaN;
if (inputPoisson < 0.2415) {
zeta = 2.2694 * Math.pow(inputPoisson, 3) - 1.6849 * Math.pow(inputPoisson, 2) + 1.8433 * inputPoisson + 2.8898e-03;
} else {
zeta = 0.7861;
}
} else {
if (globalContactType == "1" || globalContactType == "2" || (globalContactType == "4" && globalOrientationType == "1" && fradius == sradius)) {
var zeta = 0.38167 + 0.33136 * inputPoisson;
} else {
zeta = NaN;
}
}
return zeta;
}
function calculateStiffness(params) {
}
function updateResults() {
globalForce = parseFloat(document.getElementById("forceValue").value);
globalContactType = document.getElementById("contactTypeList").value;
globalOrientationType = document.getElementById("OrientationSelector").value;
document.getElementById("effectiveRadiusValue").innerHTML = calculateEffectiveRadius().toFixed(2);
document.getElementById("effectiveElasticityValue").innerHTML = calculateEffectiveElasticity().toFixed(2);
document.getElementById("contactRadius").innerHTML = calculateContactRadius().toFixed(3);
document.getElementById("contactWidth").innerHTML = calculateContactWidth().toFixed(3);
document.getElementById("indentation").innerHTML = calculateIndentation().toFixed(3);
document.getElementById("maximumPressure").innerHTML = calculateMaximumPressure().toFixed(2);
document.getElementById("firstMises").innerHTML = (globalMaximumPressure / calculateMisesCo(fPoisson)).toFixed(2);
document.getElementById("secondMises").innerHTML = (globalMaximumPressure / calculateMisesCo(sPoisson)).toFixed(2);
document.getElementById("firstShear").innerHTML = (globalMaximumPressure * calculateShearCo(fPoisson)).toFixed(2);
document.getElementById("secondShear").innerHTML = (globalMaximumPressure * calculateShearCo(sPoisson)).toFixed(2);
if (globalContactType == "3" || (globalContactType == "4" && globalOrientationType == "2")) {
document.getElementById("firstMisesDepth").innerHTML = (globalContactWidth * calculateMisesDepth(fPoisson)).toFixed(3);
document.getElementById("secondMisesDepth").innerHTML = (globalContactWidth * calculateMisesDepth(sPoisson)).toFixed(3);
document.getElementById("firstShearDepth").innerHTML = (globalContactWidth * calculateShearDepth(fPoisson)).toFixed(3);
document.getElementById("secondShearDepth").innerHTML = (globalContactWidth * calculateShearDepth(sPoisson)).toFixed(3);
} else {
if (globalContactType == "1" || globalContactType == "2" || (globalContactType == "4" && globalOrientationType == "1" && fradius == sradius)) {
document.getElementById("firstMisesDepth").innerHTML = (globalContactRadius * calculateMisesDepth(fPoisson)).toFixed(3);
document.getElementById("secondMisesDepth").innerHTML = (globalContactRadius * calculateMisesDepth(sPoisson)).toFixed(3);
document.getElementById("firstShearDepth").innerHTML = (globalContactRadius * calculateShearDepth(fPoisson)).toFixed(3);
document.getElementById("secondShearDepth").innerHTML = (globalContactRadius * calculateShearDepth(sPoisson)).toFixed(3);
} else {
}
}
}