Collision simulation of river-sea ship is accomplished based on nonlinear finite element method. Firstly, we discuss the development of collision analysis methods including theoretical methods, empirical formula method, experimental techniques and numerical analysis methods, and introduce the Central Difference Method adopted in the collision simulation. Then, model of ship structure and rigid ...

This article presents a method for collision handling applied to the semi rigid mass spring cloth model formerly described in Pro This method deals with the four main di culties encountered in collision handling The rst is collision detection The second is optimization of collision detection which is otherwise excessively time consuming The third is collision response The fourth is conservation...

We revisit the computation of probability of collision in the context of automotive collision avoidance (the estimation of a potential collision is also referred to as conflict detection in other contexts). After reviewing existing approaches to the definition and computation of collision probability we argue that the fundamental quantity that is required to answer a question like ”What is the ...

Collision tumor is a rare phenomenon characterized by coexistence of completely distinct and independent tumors at the same body location. Collision tumors have been reported in different sites. However, they are extremely uncommon in the duodenum. We report the case of a 52-year old man with a collision tumor in the third portion of the duodenum with two distinct tumors of primary adenocarcino...