Paper Title:
Spallation of Concrete under Dynamic Loading: Mesh Size Effect
  Abstract

Spallation of concrete under dynamic loading has been the hot issue of concern about civil engineering structures and protective engineering. In the present paper, the principle of propagation of stress wave and the induced spallation process along a one-dimensional bar and the RFPA-Dynamics code which considers the heterogeneity of the concrete materials are briefly introduced. In order to numerically investigate the effect of mesh size of numerical model on the computational results, the failure process of concrete with three mesh sizes under dynamic loads was numerically simulated using RFPA-Dynamics code. Numerical simulations show that the failure patterns of concrete with different mesh sizes under dynamic stress waves are different. It is found that for the numerical models with the same mechanical parameters, the smaller mesh size of the numerical model is, the longer propagation of stress wave delay, the smaller the compressive stress is, thus the greater the tensile stress is, and the number of cracks is increasing, in general, rupture is more serious. The accuracy of mesh is little to improve when the number of the grid increases to a certain value.

  Info
Periodical
Edited by
Shaobo Zhong, Yimin Cheng and Xilong Qu
Pages
929-933
DOI
10.4028/www.scientific.net/AMM.50-51.929
Citation
L. Yuan, T. Xu, Q. Xu, "Spallation of Concrete under Dynamic Loading: Mesh Size Effect", Applied Mechanics and Materials, Vols. 50-51, pp. 929-933, 2011
Online since
February 2011
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xing Guo Wang, Zhao Xia Cheng, Yongchao Hao, Yi Xin Wang
Abstract:Mixing three different fiber composites into concrete specimens respectively, compressive strength, splitting tensile strength and flexural...
1976
Authors: Seung Hyun Ryu, Young Oh Lee, Sun Woo Kim, Hyun Do Yun
Abstract:Acoustic emission (AE) is a powerful nondestructive test that can be used to characterize cracking, growth of cracks, and the degree of...
2528
Authors: Ke Liu, Yan Ming Wang, Wen Wen Yang, Yong Sun
Chapter 1: Advanced Materials Science
Abstract:The fiber reinforced concrete with flexible fiber and rigid fiber respectively added into C30 plain concrete, curing under standard condition...
619
Authors: Jian Wei Wang, Xin Yong Xu, Di Zhang, Jing Tian
Chapter 2: Applied Mechanics and Manufacturing Technology
Abstract:By using ANSYS software, the finite element model of the foundation for wind turbine generator system is built. On the basis of concrete...
327
Authors: Zhi Xiang Yu, Lan Yan Zhang, Ya Na Zhao, Tao Wei
Chapter 4: Road and Bridge Engineering
Abstract:In order to study effectiveness of measures taken to protect mountain bridge piers against rockfall in the upper reaches of the Minjiang...
1683