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In this paper, mining machinery enterprises and research cooperation projects \Crawler undercarriage less demanding conditions on the ground, in the mines, deep sea, marshes and other environments can walk, so in the military, engineering machinery, agricultural machinery, and other fields have been fully utilized. Crawler track shoe is composed of key components of the device, each a crawler board damage, affect the working status of the machine, and the large number of track shoe applications, accounting for a larger proportion of crawler undercarriage, track weight too heavy will affect the engine power, increased fuel consumption and shorten life. So Shoe optimization to improve the machine's overall performance, saving energy is important. Topology optimization is the shape optimization, and its essence is to find the optimal load bearing area of the object the best material distribution program. Topology optimization, there are two basic principles: the principle degradation and evolution theory. The basic idea is degraded principle \iteration steps to obtain the final topologies. Evolutionary theory's basic idea is to Darwin's evolutionary theory is applied to structural optimization, \\In extensive reading on crawler device and topology optimization of relevant literature, based on the crawler device and topology optimization studies were summarized overview. Based on the theoretical basis of variable density method by Optistruct software combination Shoe topology optimization conditions. The main work and papers are as follows: (a) to read about analyzing the forces crawler undercarriage related books, calculate the value of the condition of the force, to prepare for the following analysis. (2) contact analysis is an important application of this method, but also the software ANSYS important nonlinear characteristics. Track shoe with ANSYS software in tension, compression, climbing, cornering and other conditions of the force for finite element analysis. (3) This article describes the topology optimization of the development process, on this basis, based on the finite element analysis presented several topological principle of the method, derived variable density method focuses on the mathematical model. (4) The use of Hyperwoks Optistruct module, track shoe combination condition topology optimization. By adjusting the elastic modulus of the ground floor stiffness on track shoe material distribution. Select the appropriate ground stiffness on track plate topology optimization. Topology optimization objective function for each condition weighted strain energy minimization, constraints for the optimization of regional volume decreased 30%, discrete variable is set to 3. (5) the results of the topology optimization of simple processing, including track shoe for size and shape optimization, and finite element analysis, comparing the situation before and after optimization of stress.
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