Note: The tensor definition of vector gradient is different from (the transpose of) that of Jacobian matrix, which is $\nabla \mathbf{f}=\frac{\partial {{f}_{i}}}{\partial {{x}_{j}}}{{\mathbf{e}}_{i}}{{\mathbf{e}}_{j}}$
Summary on elasticity
Appendix:
Solid mechanics experiments
🏷 Category=Mechanics