ELASTIC/VISCOPLASTIC SOLUTION OF TWISTY COLUMNS BY MEANS OF LAPLACE FUNCTIONAL TRANSFORMAIIONS

By means of Laplace transformation,the whole process of the twisting ofelastic/viscoplastic columns are solved in this paper.In considering the distribution of thestresses in the column,we construct a stress function and a displacement function and thenuse Laplace transformation.The solutions cylinder and a cylinder with a hole are obtained.