ON LARGE DEFLECTION OF CURVED STRIPS UNDER COMBINED THERMAL AND PRESSURE LOADINGS

摘要

The governing equations in various Forms for large deflections of initially curved strips, including thermal force and thermal mom¬ent effects, are derived based on Reissner's variational principle. Exact solutions are obtained for the cases corresponding to net tensile, compressive, and zero in-plane forces with arbitrary distributed, thermal loads, and small initial curvature. Numerical examples are given for a clamped-clamped strip with a particular initial shape, temperature distribution, and uniform pressure.nFor the purpose of comparison, approximate solutions based on Reissner's variational principle and minimum potential energy are obtained. In both methods, the vibrational modes, and assumed modes are used. Good agreement is shown in the numerical examples. These approximate methods of solution will be used for the case of finite plates.