Optimal Layout of a Truss for Alternative Loads,

摘要

The paper is concerned with the following problem:two alternative loads with the same point of application, A,are to be transmitted to a rigid foundation by a plane truss of minimum weight whose load factors for plastic collapse under one or the other load are not to exceed a given value. A necessary and sufficient condition for global optimality is established and used to determine the optimal layout of the truss. (Author)