Finite Element Analysis OF Bi-Modulus Ceramic Structure

By judging positive and negative of stress balls tensor of ceramic beam structure, to determine tension and compression elastic modulus and the position of the neutral layer of the beam structure, the structural analysis of the ceramic beam could be done. The results showed that, there was a great error value between the first principal stress calculated by bi-modulus and by single-modulus. So did other stresses. The error value completely exceeded the allowable range of engineering. Only by defining the bimodulus, structural optimization analysis of ceramic materials could be accurately carried out. In this paper, the method is presented by judging positive and negative of stress balls tensor to determine tension and compression elastic modulus of the structure. Basing on Ansys, analysis modules of the materials of different modulus of elasticity in tension and compression have been developed. This method has relatively small calculation, wide range of applications and can even be applied to large, complex ceramic structures. The method for the optimization of the structure of the ceramic material has a very important practical significance. Keywords-Ceramic beam; stress balls tensor; bi-modulus; single-modulus