• ISSN: 1674-7461
  • CN: 11-5823/TU
  • Hosted by: China Society and Technology Association
  • Organizer: China Graphics Society
  • Guidance: China Academy of Building Research

Numerical Simulation for Monotonic Loaded-displacement of RC Shallow Beam Using ANSYS
Li Wenhua, Zhao Yange, Zhang Ji, Pan Ning, Du Wenbo, Fang Wei
2010,2(3):83-90.
In this paper, the current numerical simulation method for RC shallow beams is summarized. Using different FE model and constitutive model, two RC beams from experiment conducted and documented by Bresler et. are analyzed. By comparing analysis and experiment results, the best combination of FE model and constitutive model used for numerical simulation is pointed out; explanation for differences between analysis and experiment results has been given out. Furthermore, the study shows that ultimate bearing capacity of beams should not be simply determined as the imposed load when the solution is not converged but be related to strain of concrete in compression region and stress of reinforcement in thensile region. At last, the sensitivity of some parameters is studied by single factor method. All the conclusions from this paper will promote the standardization of numerical simulation of RC beams.
key words: ANSYS, Shallow Beam, Load-displacement, Numerical Simulation, Standardization
A New Index for Finite Element Mesh Shape Evaluate
Zhang Ji, Chen Dailin, Wang Hui, Liang Bo
2011,3(2):16-20.
Single element mesh shape evaluate index of ANSYS and SAP2000 is analyzed and summarized in the present paper.Based on this indexes, a new index is proposed. Benefit from the new index, not only single element mesh but also mesh compose of more elements can be evaluated. A cantilever beam problem is meshed by different shape and procedure programmed by C++ language is used to calculate this index of the mesh, after compared the solution with exact one, a conclusion can be draw that there is a strong correlation between the index value and the precision of solution. Multilayer and high-rise buildings mesh is also evaluated, the results show the index is still efficient and reliable.
key words: Mesh, Finite Element Method, Shape Index

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