Inverse anamorphosis and multi-map techniques for free topology generation of curved self-stiffened panels using skeleton-based integral soft objects

Abstract

In the present paper, an improved procedural method for the generation of curved, arbitrarily conformed self-stiffened panels using skeleton-based integral soft objects is presented. The proposed approach extends the application of integral soft objects to curved mesh surfaces by operating an inverse anamorphic mapping of special-purpose displacement fields applied orthogonally to the patched surface representing the curved structural domain. An efficient parallel procedure, able to evaluate the vector field of normals at mesh nodes of the host domain, is preliminary illustrated. Several multi-map techniques are subsequently exploited to generate arbitrary protrusions on different curved mesh surfaces, either open or closed. • Integral stiffeners can now be produced on curved meshes, either open or closed. • No support geometry is required or employed by the method. • A large collection of stiffening objects is available; further objects may be added. • The method does not require re-meshing, just fast morphing. • The whole method (procedures and database) is GPGPU compliant.