Ultralight X-type lattice sandwich structure (II): Micromechanics modeling and finite element analysis |
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| Authors: | QianCheng Zhang AiPing Chen ChangQing Chen and TianJian Lu |
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| Affiliation: | (1) State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and Engineering, Xi’an Jiaotong University, Xi’an, 710049, China;(2) MOE Key Laboratory for Strength and Vibration, School of Aerospace, Xi’an Jiaotong University, Xi’an, 710049, China;(3) Department of Engineering Mechanics, AML, Tsinghua University, Beijing, 100084, China |
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| Abstract: | The methods of homogenization and finite elements are employed to predict the effective elastic constants and stress-strain
responses of a new type of lattice structure, the X-structure proposed by the authors in a companion paper. It is shown that
in most cases the predictions by the equivalent homogenization theory agree well with the experimental and 3-dimensional finite
element calculated results. The theoretical and numerical study supports the argument that the X-structure is superior to
the pyramid lattice structure in terms of mechanical strength.
Supported by the National Basic Research Program of China (“973” Project) (Grant No. 2006CB601202), the National Natural Science
Foundation of China (Grant Nos. 10632060, 10825210), the National “111” Project of China (Grant No. B06024) and the National
High-Tech Research and Development Program of China (“863” Project) (Grant No. 2006AA03Z519) |
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| Keywords: | sandwich panel lattice structure equivalent homogenization finite element model |
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