An eigenelement method and two homogenization conditions

作者：Xing Yufeng^*; Wang Xingming

来源：Acta Mechanica Sinica, 2009, 25(3): 345-351.

DOI：10.1007/s10409-008-0215-5

• Composites
• Homogenization
• The equivalence of strain energy
• Deformation similarity
• Eigenelement method

Under inspiration from the structure-preserving property of symplectic difference schemes for Hamiltonian systems, two homogenization conditions for a representative unit cell of the periodical composites are proposed, one condition is the equivalence of strain energy, and the other is the deformation similarity. Based on these two homogenization conditions, an eigenelement method is presented, which is characteristic of structure-preserving property. It follows from the frequency comparisons that the eigenelement method is more accurate than the stiffness average method and the compliance average method.

• 出版日期2009-6
• 单位北京航空航天大学