This paper extends a previously proposed algorithm for the intersection of finite-element surface meshes. The new version of the algorithm treats special cases of multiple intersections that were not dealt with in the original version. This paper also describes a class library, in the context of Object Oriented Programming, for the generic handling of several types of surface geometry. This lib...

In the case of machining process, there are many phenomenon that are not easily observed or not subject to direct experimentation so the models are developed so that the influence of a number of process parameters can be simulated using this model. Common models used are based on Eulerian or Lagrangian finite element techniques. Four primary categories of methodologies for modeling and simulati...

This paper presents a composite programmable graph grammar model of the three dimensional self-adaptive hp Finite Element Method (hp-FEM) algorithms. The computational mesh composed of hexahedral finite elements is represented by a composite graph. The operations performed over the mesh are expressed by composite graph grammar productions. The three dimensional model is based on the extension o...

A shell/3D modeling technique was developed for which a local solid finite element model is used only in the immediate vicinity of the delamination front. The goal was to combine the accuracy of the full three-dimensional solution with the computational efficiency of a plate or shell finite element model. Multi-point constraints provide a kinematically compatible interface between the local 3D ...

Assembly accuracy significantly affects the performance of precision mechanical systems. In this study, an entropy-based evaluation method for contact strain-energy distribution is proposed to predict the assembly accuracy. Strain energy is utilized to characterize the effects of the combination of form errors and contact deformations on the formation of assembly errors. To obtain the strain en...

Continuously reinforced concrete pavement (CRCP) performance depends primarily on early-age cracks that result from changes in temperature and drying shrinkage. This report presents the findings of a study of the early-age behavior of CRCP in response to temperature change using a three-dimensional finite element model. The nonlinear effects of the bond slip between concrete and steel and betwe...

The paper presents an approach for matching image objects in dynamic pedobarography image sequences, based on finite element modelling of the objects and on modal analysis of the of the object models. The proposed approach allows the determination of correspondences between two distinct images, using either 2D or 3D modelling. The displacement vectors for the nodes of the matched object models ...

A three-dimensional finite element method is developed to predict the critical conditions necessary to nucleate electromigration or stress induced voids in interconnects. Our approach is to model interfaces using a modified cohesive zone, which permits the interfaces to separate at a critical stress, and also accounts for mass transport along the interfaces. A simple boundary value problem is s...

During the industrial design process, a product model undergoes several analyses. One of the most common ones is the finite element analysis. This kind of analysis needs a simplified model, which can include idealised parts, and thus it is usually non-manifold and non-regular. During the idealisation process, the semantic information attached to the CAD model, such as features or surface types,...