Abstract: A theory of the impact or collision of two rigid bodies, taking account of friction, is presented. It determines how the direction of sliding varies during the impact, which must be known ...

Abstract: A method for calculating the stress distribution in a narrow region of an elastic plate is presented. It consists in treating the narrow region by beam theory, treating the rest of the plate ...

Abstract: We consider the problem of determining what shape column has the largest critical buckling load of all columns of given length and volume. This problem was previously solved for a column ...

Abstract: The equilibrium of an inflated cylindrical membrane in contact with two rigid cylindrical surfaces is considered. The cross section of the membrane consists of two circular arcs of radius R ...