
 Governing Equations of Elasticity 
  Often in solving elasticity problems, you need to algebraically manipulate the governing equations of the theory of elasticity. 
  In addition, because the equations of the theory of elasticity tend to become complicated, long, and consequently prone to error in manipulations, performing analyses in Mathematica increases efficiency and correctness. 
  The focus of this chapter is on the governing equations of the linearized theory of elasticity in three types of coordinate systems, namely, Cartesian, cylindrical, and spherical coordinates. 
 documents.wolfram.com /applications/structural/GoverningEquationsofElasticity.html (1447 words) 
