Variable-takt operation method for simulating two-dimensional product compact layout by using convex hull and rubber band

Abstract

The invention relates to a variable-takt operation method for simulating a two-dimensional product compact layout by using convex hulls anda rubber band. A rubber band surrounds n convex hulls to form a convex hull plus rubber band model. The method mainly comprises the following steps of: calculating the smallest diameter d of inscribed circles of n convex hulls, an area sum S of n convex hulls, time takt Tt, an initial-time model area St and a parameter as shown in the accompanying drawing; estimating initial average velocity as shown in the accompanying drawing of each convex hull according to the elastic tension of the rubber band, selecting a k value according to the number and shape of the convex hulls, wherein a product of the smaller one of d and Lt is current takt distance DTt, time is as shown in the accompanying drawing and time takt Tt is equal to delta Tt'; calculating a moving track of each convex hull to obtain a position of each convex hull at the end of the current timetakt; checking whether the layout is a compact layout, if yes, ending the process, and if not, continuing the process. According to the method, by setting the variable takt Tt with reference to DT, the number of needed takt is effectively reduced, the compact layout design efficiency is improved, and a high-efficiency method is provided for weight reduction and refining in mechanical product design.

Description

technical field [0001] The invention relates to a technique for simulating the compact layout of two-dimensional products by convex shell rubber bands, in particular to a variable tempo operation method for simulating the compact layout of two-dimensional products by convex shell rubber bands. Background technique [0002] The layout and optimization of equipment mechanical components is to arrange a series of components compactly in the smallest possible space under the premise of satisfying the excellent performance of the equipment, which is the key content of lightweight and refined product design. [0003] At present, there are many methods for solving layout problems, but all of them are only suitable for solving specific problems, and are easy to fall into local optimum. For complex layout problems, it often requires a combination of several heuristic methods to solve them, and the solution process is relatively complicated. [0004] Physics-based convex hull and rub...

AI Technical Summary

Problems solved by technology

The existing time beat setting can only be roughly estimated based on manual experience and the collision depth in part movement, and there is no specific operation method

This makes it impossible to effectively reduce the number of convex hull collisions in the time beat during the rubber band simulation design process, which increases the complexity of the simulation process, and also makes it impossible to improve the efficiency of the rubber band simulation layout design

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