Closure of the cubic tensor polynomial failure surface

摘要: An analytical method has been developed to ensure closure of the cubic form ten sor polynomial strength criterion. The intrinsic complexity function is such that special conditions must be met close failure surface in three-dimensional stress space. These requirements are derived terms non-intersecting for asymptotes and an asymptotic plane. To demonstrate validity this approach, closed surfaces were two graphite/epoxy material systems (3M SP288-T300 IM7 8551-7). agreement test data with model clearly shows it possible use a higher order theory confidence.