HW_4 - ECE 432 Introduction to MEMS Homework 4(Due in class...

Info icon This preview shows pages 1–2. Sign up to view the full content.

ECE 432 Introduction to MEMS Sunil Bhave Homework 4 (Due in class on Monday, 10/1/2007) Fall 2007 1. Cantilever under uniform distributed load a. Using the definition of moment, derive the result for the moment across a uniformly loaded cantilever beam to be M(x) = ( ρ/229 (L-x) 2 . Here ρ is the load per unit length. b. Derive the result for y(x) 2. Bending under gravity Use the results from Question 1 for the polysilicon beam given below. Let g = 2 μ m, thickness = 2 μ m , and w = 10 μ m. a. How much does the beam given below bend under its own weight if L = 30 μ m. Density of polysilicon is 2330 Kg/m 3 . b. How long does the beam have to be to touch the bottom on its own weight? L g w 3. L-suspension You are designing a suspension using two constant-cross-section beams with width
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: W (in the plane of the paper) and thickness t (into the plane of the paper). One beam is anchored to the substrate and has length L x , the other is attached to the end of the first beam at a 90 degree angle and has length L y . When you apply a force along the x axis and measure x deflection you want to get the same result as when you apply a force along the y axis and measure a y deflection. Calculate the ratio of the lengths of the two beams. 4. L-suspension in Ansys Read the Users Manual and run through the examples. Verify your analytical result for the L-suspension spring using static numerical analysis in Ansys....
View Full Document

  • Fall '07
  • Bhave

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern