Size Effects on Concrete Damaged Plasticity Model
نویسندگان
چکیده
منابع مشابه
On a damage-plasticity approach to model concrete failure
A damage-plasticity constitutive model for the description of fracture in plain concrete is presented. Two approaches, the local model comprising the adjustment of the softening modulus and the nonlocal model based on spatial averaging of history variables, are applied to the analysis of a concrete bar subjected to uniaxial tension and to a three-point bending test. The influence of mesh size a...
متن کاملA Plasticity Model to Predict the Effects of Confinement on Concrete
A plasticity model to predict the behavior of confined concrete is developed. The model is designed to implicitly account for the increase in strength and ductility due to confining a concrete member. The concrete model is implemented into a finite element (FE) model. By implicitly including the change in the strength and ductility in the material model, the confining material can be explicitly...
متن کاملInvestigation of Rehabilitation Effects on Fire Damaged High Strength Concrete Beams
Abstract—When high strength reinforced concrete is exposed to high temperature due to a fire, deteriorations occur such as loss in strength and elastic modulus, cracking and spalling of the concrete. Therefore, it is important to understand risk of structural safety in building structures by studying structural behaviors and rehabilitation of fire damaged high strength concrete structures. This...
متن کاملDetecting Fire Damaged Concrete Using Laser Scanning
Concrete is the single most widely used building material throughout the UK and the world. A major advantage of properly designed concrete construction is its inherent resistance to the effects of unwanted fires. The detection and location of structural deficiencies in buildings is of vital importance from a health and safety point of view. In some cases the damage to these materials is easy to...
متن کاملA simple and efficient plasticity-fracture constitutive model for confined concrete
A plasticity-fracture constitutive model is presented for prediction of the behavior of confined plain concrete. A three-parameter yield surface is used to define the elastic limit. Volumetric plastic strain is defined as hardening parameter, which together with a nonlinear plastic potential forms a non-associated flow rule. The use of non-associated flow rule improves the prediction of the dil...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Current Trends in Civil & Structural Engineering
سال: 2020
ISSN: 2643-6876
DOI: 10.33552/ctcse.2020.06.000637