The topology optimization of planar continuum structures with interval parameters subjected to non-probabilistic constraints on fundamental eigenfrequency and the forbidden zone between two eigenfrequencies are studied.

Topology optimization of plane continuum using non-uniform thickness finite element;

An approach to get the topology optimization of plane continuum based on criterion method is present ed.

To completely avoid producing elements jointed at their corner nodes and checkerboard patterns,which frequently occur when the topology optimization of plane continuum is studied,the theory of topology analysis of plane continuum in topology optimization process and the simple algorithm for programming are studied.

Topological optimization of continuum structure with static displacement and frequency constraints by ICM method;

A new topological optimization method of dynamic continuum structures is presented based on nodal independent design variables.

Topological Optimization of Continuum Structures and Heat Radiation Structures;

A new method was described to improve the genetic algorithms based optimization by using the case based learning,which is applied successfully to the topology optimization of continuum structures.

Up to now the researches on the deformation of the discontinuous interface of rock mass can be classified into two groups:one is the finite element method combined with the modelling of the discontinuous interface,the other is the segmentation of the rock texture.