OS-V: 0740 Curved Strip Hook
Raasch Challenge Raasch challenge is a curved strip hook problem with a tip in-plane shear load, posed in 1990 by Ingo Raasch of BMW
in Germany. The problem poses a significant challenge to shell elements because of the inherent coupling between
three modes of deformation: bending, extension, and twist. OptiStruct is benchmarked against the Raasch challenge to assure its shell elements performance on Linear Static Analysis.