create a fourbar mechanism calculator in javascript

To create a fourbar mechanism calculator in JavaScript, we'll use HTML and CSS to create the user interface and JavaScript to perform the calculations.

First, let's create the HTML structure for the fourbar mechanism calculator. We'll have four input fields for the lengths of the fourbars and an output field to display the result:


<div class="fourbar-inputs">
  <label for="AB">Length of AB:</label>
  <input type="number" id="AB">

  <label for="BC">Length of BC:</label>
  <input type="number" id="BC">

  <label for="CD">Length of CD:</label>
  <input type="number" id="CD">

  <label for="DA">Length of DA:</label>
  <input type="number" id="DA">

  <button id="calculate">Calculate</button>

  <label for="result">Ouput:</label>
  <input type="number" id="result" readonly>
</div>
455 chars
19 lines

Next, let's style the calculator using CSS:


.fourbar-inputs label {
  display: block;
  margin-bottom: 5px;
}

.fourbar-inputs input {
  margin-bottom: 10px;
}

.fourbar-inputs button {
  display: block;
  margin: 10px 0;
}

.fourbar-inputs input[type='number'] {
  width: 50px;
}
237 chars
18 lines

Now, let's add the JavaScript code to perform the fourbar mechanism calculation:


index.tsx
const AB = document.getElementById('AB');
const BC = document.getElementById('BC');
const CD = document.getElementById('CD');
const DA = document.getElementById('DA');
const calculateBtn = document.getElementById('calculate');
const result = document.getElementById('result');

calculateBtn.addEventListener('click', () => {
  const ab = parseFloat(AB.value);
  const bc = parseFloat(BC.value);
  const cd = parseFloat(CD.value);
  const da = parseFloat(DA.value);

  const cosTheta4 = (Math.pow(ab, 2) + Math.pow(cd, 2) - Math.pow(bc, 2) - Math.pow(da, 2)) / (2 * ab * cd);
  const sinTheta4 = Math.sqrt(1 - Math.pow(cosTheta4, 2));
  const theta4 = Math.atan2(sinTheta4, cosTheta4);

  const temp1 = ab + cd * Math.cos(theta4);
  const temp2 = cd * Math.sin(theta4);
  const temp3 = da * Math.sin(theta4);
  const xm = (temp3 / temp1) - (temp2 / temp1) * Math.tan(theta4);
  const ym = (da - (bc * xm) / ab) / (1 - (bc / ab));

  const phi = Math.atan2(ym, xm);

  let resultAngle = 180 - (theta4 * 180) / Math.PI;
  if (resultAngle < 0) {
    resultAngle += 360;
  }

  result.value = `Output angle = ${resultAngle.toFixed(2)} degrees, Coupler angle = ${phi.toFixed(2)} radians`;
});
1187 chars
33 lines

Now, when the user clicks the "Calculate" button, the JavaScript code will extract the values from the input fields and perform the fourbar mechanism calculations. The result will be displayed in the output field.

This is just a basic example of how to create a fourbar mechanism calculator in JavaScript. More advanced applications could include visualization of the mechanism or the ability to adjust the input values with sliders or other controls.

similar javascript code snippets

ham sandwich cost equivalent calculator in javascript

send email in javascript

how to use useeffect in javascript

how to create a proxy variable in javascript

import a module in javascript

connect an api in javascript

create a react context in javascript

how to make a get request in javascript

how to add a tree in javascript

how to create fibonacci in javascript

related categories