Computational Aspects in Thermo-Hydro-Mechanical Analysis of Porous Media Part II: Practical Implementation of Creep and Shrinkage Analysis into Finite Element Software

2009 ◽  
pp. 183-196
Author(s):  
L. Jendele ◽  
Z. Bittnar
Keyword(s):  
Finite Element ◽  
Porous Media ◽  
Mechanical Analysis ◽  
Practical Implementation ◽  
Finite Element Software ◽  
Computational Aspects ◽  
Creep And Shrinkage

Mechanical Analysis of the Recycled Concrete Brick Masonry Wall under In-Plane Load

2011 ◽  
Vol 250-253 ◽  
pp. 278-282 ◽  
Author(s):  
Song Gu ◽  
Guo Ping Chen ◽  
Shui Wen Zhu
Keyword(s):  
Finite Element ◽  
Mechanical Analysis ◽  
Masonry Wall ◽  
Brick Masonry ◽  
Recycled Concrete ◽  
Masonry Walls ◽  
Fe Model ◽  
Element Analysis ◽  
Finite Element Software ◽  
Strength Capacity

The purpose of this paper was to investigate the mechanical behavior and failure mode of recycled concrete brick masonry wall under cycling in-plane load. These models of masonry walls were constructed in the laboratory and experimented under in-plane cycling load. The masonry wall was made of recycled concrete bricks joined by mortar, with gypsum lining on both faces. A simulation based on the experiment was carried out using the finite element software ANSYS. In the proposed FE model, the recycling concrete bricks and joints were modeled separately, allowing for nonlinear deformation characteristics of the two materials. The results of the experiment and the finite element analysis were analyzed and compared. When the stress distributions were taken into consideration in the experiments and solutions of ANSYS, it was observed that the stress concentration occurred on two diagonals of the masonry wall. The destruction process and characteristics of the masonry wall were obtained by the experiments. The results of finite element method matched experimental results very well. The FE software ANSYS can be used in the analysis of recycling concrete brick masonry walls under in-plane cycling load and strength capacity.

Finite element software for creep and shrinkage in concrete

1992 ◽  
Vol 45 (1) ◽  
pp. 113-126 ◽  
Author(s):  
L. Jendele ◽  
D.V. Phillips
Keyword(s):  
Finite Element ◽  
Finite Element Software ◽  
Creep And Shrinkage

scholarly journals Comparisons of Two Typical Specialized Finite Element Programs for Mechanical Analysis of Cement Concrete Pavement

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Hanyan Gu ◽  
Xin Jiang ◽  
Zhenkun Li ◽  
Kang Yao ◽  
Yanjun Qiu
Keyword(s):  
Finite Element ◽  
Mechanical Analysis ◽  
Concrete Pavement ◽  
Traffic Load ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Software Products ◽  
Solution Strategies ◽  
Finite Element Software ◽  
Cement Concrete Pavement

The structural mechanics analysis of the Portland cement concrete pavement (PCCP) is considerably complicated and distinctive. From the application viewpoint, the capabilities and characteristics of two typical professional finite element software products, named KENSLABS and EverFE, are analyzed. The similarities and differences between these two programs are compared. The comparisons focus on some key factors of modeling and solution strategies, such as element type, meshing, traffic load and temperature curling, boundary conditions, and contact conditions. Based on one specific case example, the two software products were conducted to demonstrate their main functions. The research results clarify the performance of the two software products for structural analysis of cement concrete pavement and indicate each application conditions from their respective features, which can provide valuable references for software users and program developers.

Numerical Mechanical Analysis of Filled Rubber under Different Deformation States Based on a New Hyperelastic Constitutive Model

2021 ◽  
Vol 1032 ◽  
pp. 15-22
Author(s):  
Xin Tao Fu ◽  
Ze Peng Wang ◽  
Lian Xiang Ma
Keyword(s):  
Experimental Data ◽  
Finite Element ◽  
Constitutive Model ◽  
Pure Shear ◽  
Mechanical Analysis ◽  
Uniaxial Tensile ◽  
Material Parameters ◽  
Finite Element Software ◽  
Filled Rubber ◽  
Deformation State

The accuracy of the rubber constitutive model characterizing experiment data has a crucial influence on the mechanical analysis of rubber structures. In this paper, a new improved hyperelastic constitutive model is proposed, and the model is derived into the stress-strain forms of uniaxial tension, equibiaxial tension and pure shear. Based on the experimental data of filled rubber, the material parameters of each deformation state are obtained by using the newly proposed rubber hyperelastic constitutive model, and the uniaxial tensile (UT), Equibiaxial tension (ET) and Pure shear (PS) specimens are simulated and calculated in the finite element software. the stress state of each finite element specimen is analyzed and the obtained simulation data are compared with the experimental data. It is found that the new model can accurately characterize the hyperelastic mechanical properties of the experimental specimens in different deformation states. At the same time, the reasons for the deviation from the experimental data in the process of plane tensile simulation are analyzed and explained comprehensively. The reliability and accuracy of the classical rubber constitutive relations of polynomial models and eight-chain model are studied. the results show that different hyperelastic models have different ability to describe the hyperelastic behavior in different deformation states. the hyperelastic constitutive model proposed in this paper can be easily embedded into finite element software and has the advantages of accurate results, few material parameters and simple testing.

Mechanical Analysis for Asphalt Surface in Transverse Contraction Joint of Porous Concrete Base

2012 ◽  
Vol 443-444 ◽  
pp. 757-762
Author(s):  
Li Jun Suo ◽  
Xia Guang Hu
Keyword(s):  
Finite Element ◽  
Asphalt Pavement ◽  
Mechanical Analysis ◽  
Three Dimension ◽  
Shearing Stress ◽  
Porous Concrete ◽  
Finite Element Software ◽  
Concrete Base ◽  
Contraction Joint ◽  
Decrease Decrease

In the field of asphalt pavement, the study has shown that porous concrete base has a good performance of drainage capacity. When porous concrete is used in asphalt pavement, problem of water damage for asphalt pavement can be settled effectively. Because of that, more and more porous concrete base have been applied to asphalt pavement construction in recent years. As a matter of fact, it is necessary to do mechanical analysis for asphalt surface, which is located in the middle of porous concrete base’s transverse contraction joint, in order to put forward theoretical basis for asphalt surface design. In the paper, three–dimension finite element model of asphalt pavement, which includes transverse contraction joint of porous concrete base and asphalt surface, is created for the aim of doing mechanical analysis of asphalt surface which is located in transverse contraction joint of porous concrete base. Based on numerical method, finite element software, such as ANSYS, is employed to do mechanical analysis for asphalt surface which is located in transverse contraction joint of porous concrete base of asphalt pavement. Mechanical analysis show that load stress is compressive stress, and maximum shearing stress, which is caused by load, is evident in asphalt surface which is located in transverse contraction joint of porous concrete base of asphalt pavement. Maximum shearing stress decrease, decrease, decrease and increase respectively with increase of the surface’s modulus, the surface’s thickness, base’s thickness and ratio of base’s modulus to foundation’s modulus. Meanwhile, maximum shearing stress, which is caused by thermal stress, increase and decrease respectively with increase of surface’s modulus and ratio of base’s modulus to foundation’s modulus.

Finite Element Analysis on Creep and Shrinkage of Reinforced Concrete

2013 ◽  
Vol 838-841 ◽  
pp. 53-56
Author(s):  
Yun Tao Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Engineering Application ◽  
Reinforcement Ratio ◽  
Element Analysis ◽  
Finite Element Software ◽  
Steel Bar ◽  
Creep And Shrinkage ◽  
Good Agreement

The finite element software ANSYS/CivilFEM was applied to analyses the influence of steel bar restraint on creep and shrinkage of reinforced concrete. The analysis results are in good agreement with the experiment results. When the reinforcement ratio is low, the steel bar exerts less influence on creep and shrinkage, and the influence of steel bar can be neglected in engineering application. However, the reinforcement can effectively reduce creep and shrinkage development when the reinforcement ratio is high.

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