Mechanical Engineering, Indian Institute of
Science, Bangalore 560 012, India Optimization hinders evolution! BE 205
Introduction to Biomechanics of Solids
Jan.-May., 2016
Instructors: G. K.
Ananthasuresh, Room 106, ME Building, suresh at
mecheng.iisc.ernet.in
Teaching assistant: Varsha Vasudevan, varsha at cns.iisc.ernet.in
Lectures: Tu, Th: 02:o0 pm - 03:30 pm;
Venue: MRDG classroom, Ground floor, Biological Sciences Building
Homework #3
Assigned: Feb. 2nd, 2016
Due: Feb. 9th, 2016
Points: 40 Additional points for work that is beyond instructor's expectation!
10 points
Derive the expression for the rigidity modulus (shear mosulus) in terms of the Young's modulus and Poisson's ratio for a linear isotropic material.
15 points
Problem 2.31 in Humphrey-Delange book on page 103.
15 points
The micro-strains measured by a triangular rosette strain guage were -2800, 2000, -1400
along the 0, 120, and 240 degreed respectively. Find the principal strains. By aligning your cooridnate system with the
principal strain axes, find the state of stess in that coordinate system by assuming linear isotropic material with
Young's modulus of 40 GPa and Poisson's ratio of 0.45.
