Weibull distribution based constitutive model for nonlinear analysis of RC beams

2017 ◽  
Vol 61 (4) ◽  
pp. 463-473
Author(s):  
A. Ramachandra Murthy ◽  
D. Shanmuga Priya
Keyword(s):  
Constitutive Model ◽  
Weibull Distribution ◽  
Nonlinear Analysis ◽  
Rc Beams

Multi-Axial Concrete Models for Nonlinear Analysis

2014 ◽  
Vol 1065-1069 ◽  
pp. 2099-2103
Author(s):  
Hu Qi ◽  
Yun Gui Li
Keyword(s):  
Constitutive Model ◽  
Nonlinear Analysis ◽  
Damage Model ◽  
Nonlinear Characteristic ◽  
Plastic Model ◽  
Elastic Plastic ◽  
Plastic Damage ◽  
Damage Constitutive Model

The most widely used multi-axial concrete models including elastic-plastic model and elastic plastic damage model are expounded and it is recognized that the elastic plastic damage model is more reasonable to reflect nonlinear characteristic of concrete. The development and application of elastic plastic damage model is comprehensively appraised and a practical elastic plastic damage constitutive model is established. Finally the dynamic trend of constitutive model of concrete development is introduced.

scholarly journals Analysis of Three-Dimensional Damage Constitutive Model of Frozen Sand Based on the Influence of Intermediate Principal Stress and Temperature

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Shilong Ma ◽  
Zhaoming Yao ◽  
Shuang Liu ◽  
Xuan Pan
Keyword(s):  
Constitutive Model ◽  
Weibull Distribution ◽  
Principal Stress ◽  
Three Dimensional ◽  
Intermediate Principal Stress ◽  
Frozen Soil ◽  
Stress Coefficient ◽  
Frozen Sand ◽  
Distribution Parameters ◽  
Damage Constitutive Model

To study the mechanical properties of frozen soil, it is necessary to understand the damage characteristics of frozen soil. Four types of three-dimensional indoor tests of frozen sand were carried out at −5°C, −10°C, and −15°C to study the mechanical damage properties. These include different stress path tests with the principal stress coefficients of 0, 0.25, 0.5, and 0.75 while analyzing the entire failure process. First, the three-dimensional compression test of frozen sand was studied to analyze the influence of temperature and intermediate principal stress coefficient on the large principal stress of frozen soil. The damage cost of frozen sand under the influence of different temperatures and intermediate principal stress coefficients was also established. Second, using the characteristics of discreteness and randomness of the distribution of the microelements inside the frozen soil and assuming that the failure of the microelement of the frozen soil obeys the Weibull distribution, the Drucker–Prager strength criterion was used as the statistical distribution variable of the microelement of the frozen soil based on the strain equivalence hypothesis, statistical theory, and continuous damage mechanics. This allows for a constitutive model of frozen sand damage under the three-dimensional stress state to be established. Finally, the model parameter values through low-temperature three-dimensional test data were able to be determined. This model allows for the physical meaning of Weibull distribution parameters F0 and m to be analyzed, and the distribution parameters with temperature and intermediate principal stress coefficient can be modified to obtain a modified frozen sand damage constitutive model. The results show that the modified damage constitutive model can simulate the entire process curve of the large principal stress-strain of frozen sand. It shows that the large principal stress of frozen sand increases with the increase of temperature and intermediate principal stress coefficient. Concurrently, the frozen sand damage constitutive model proposed in this paper can describe the deformation behavior of frozen soil under different temperature and stress paths and can be adapted to various other sediment types.

scholarly journals Nonlinear Analysis of RC Beams Damaged by Corrosion of Reinforcement Using RBSM.

1998 ◽  
pp. 267-276
Author(s):  
Michihiro Tomida ◽  
Yasuo Kajikawa ◽  
Kazutaka Kuno
Keyword(s):  
Nonlinear Analysis ◽  
Rc Beams

Study on Constitutive Model of Weibull Distribution of Cement-Soil Uniaxial Stress Conditions

2012 ◽  
Vol 184-185 ◽  
pp. 810-817
Author(s):  
Zhi Nang Yu ◽  
Xin Jiang Song
Keyword(s):  
Constitutive Model ◽  
Weibull Distribution ◽  
Random Variable ◽  
Uniaxial Stress ◽  
Distribution Model ◽  
Proposed Model ◽  
Soil Stress ◽  
Uniaxial Compressive Test ◽  
Cement Soil ◽  
Nonlinear Elastic

According to the results of cement-soil uniaxial compressive test, consider cement-soil stress-strain relations as a continuous random process, the function of random variable obeys Weibull distribution, and introduce generalized hooke′s law in order to establish Weibull distribution of cement-soil constitutive model, solve the softening problem that a variety of incremental nonlinear elastic models cannot reflect the cement-soil. This paper discussed the parameter character of Weibull distribution model of cement-soil, presented the solving method of parameters of cement-soil Weibull distribution constitutive model, verified by results of test, revealed the rationality of the model and shows that the proposed model is more convenient than other model, have widely application value.

Nonlinear analysis of RC beams strengthened by externally bonded plates

2007 ◽  
Vol 4 (2) ◽  
pp. 119-134
Author(s):  
Jae-Guen Park ◽  
Kwang-Myong Lee ◽  
Hyun-Mock Shin ◽  
Yoon-Je Park
Keyword(s):  
Nonlinear Analysis ◽  
Rc Beams ◽  
Externally Bonded

Nonlinear Analysis of Blast Performance of Partially Prestressed RC Beams

2011 ◽  
Vol 2 (3) ◽  
pp. 295-314 ◽  
Author(s):  
Li Chen ◽  
Qin Fang ◽  
Jing-Chun Liu ◽  
Ya-Dong Zhang ◽  
Heng-Bo Xiang
Keyword(s):  
Nonlinear Analysis ◽  
Rc Beams ◽  
Blast Performance

Statistical thermal damage constitutive model of rocks based on Weibull distribution

2021 ◽  
Vol 14 (6) ◽  
Author(s):  
Zhennan Zhu ◽  
Hong Tian ◽  
Ren Wang ◽  
Guosheng Jiang ◽  
Bin Dou ◽  
...  
Keyword(s):  
Constitutive Model ◽  
Weibull Distribution ◽  
Thermal Damage ◽  
Damage Constitutive Model
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