نتایج جستجو برای: deformation

تعداد نتایج: 71353  

Journal: :international journal of civil engineering 0
a. khodaii sh. fallah

an experimental program was conducted to determine the effects of geosynthetic reinforcement on mitigating reflection cracking in asphalt overlays. the objectives of this study were to asses the effects of geosynthetics inclusion and its placement location on the accumulation of permanent deformation. to simulate an asphalt pavement overlaid on top of a crack in a concrete or asphalt pavement, ...

In this research the stress-strain curve of porous Titanium, as a common material for biomedical application, was predicted using the mechanical properties of fully solid Titanium experimental data. Modified Gurson model (Gurson-Tvergaard-Needleman (GTN) model) was used to predict the plastic response of porous Titanium in compaction. Different values of GTN parameters were used for different i...

Bahman Mirzakhani, Hossein Arabi, Mohammad Taghi Salehi,Seyed Hossein Seyedein, Mohammad Reza Aboutalebi, Jilt Sietsma, Shahin Khoddam,

  Abstract   Recovery and recrystallization phenomena and effects of microalloying elements on these phenomena are of great importance in designing thermomechanical processes of microalloyed steels. Thus, understanding and modeling of microstructure evolution during hot deformation leads to optimize the processing conditions and to improve the product properties.   In this study, finite element...

2014
Zhijuan Sun Jiliang Liu Qinyan Zhao Mingjin Chu

Abstract: Shear deformation is the most principal deformation in the lateral deformation of shear wall built with precast hollow slab which is designed to be strong shearing and weak bending. The special mechanical characteristic of the shear wall is the relative deformation of the concrete on both sides of vertical and inner joint respectively. The study introduces the measuring scheme of shea...

Ansari, S., Iranmanesh, M., Ranjbarnodeh, E.,

Studies on welding process of Aluminium weldments shows that post-weld residual stress and deformation are influential on structure efficiency and there are different variable which affect these stresses and deformation. In this study the effect of geometrical variables and welding sequence on residual stresses and deformation in Aluminium H321 have investigated by the finite element software A...

Deformation modulus of rock mass has a significant role in the support design of an underground excavation. It is determined by expensive in-situ tests or by empirical models. Existing models for estimation of deformation modulus do not consider its stress dependence. Herein, data from several sources is used to develop a stress- (depth-) dependent relation for estimation of deformation modulus...

Journal: :IEEE Trans. Vis. Comput. Graph. 2001
James E. Gain Neil A. Dodgson

ÐFree-Form Deformation (FFD) is a versatile and efficient modeling technique which transforms an object by warping the surrounding space. The conventional user-interface is a lattice of movable control points but this tends to be cumbersome and counterintuitive. Directly Manipulated Free-Form Deformation (DMFFD) allows the user to drag object points directly and has proven useful in an interact...

2007
Haiqing Xianyu Kuan-Ming Chen Shin-Tson Wu

Haiqing Xianyu Kuan-Ming Chen Shin-Tson Wu Abstract — An electrically controllable blueshift of the reflection band is observed in a cholesteric liquid crystal with either positive or negative dielectric anisotropy. The change in optical properties is a result of a two-dimensional periodic undulation of the cholesteric texture, known as Helfrich deformation. This blueshift mechanism was used to...

2008
Lyndsey Clarke Min Chen Benjamin Mora

Caricatures are a form of humorous visual art, usually created by skilled artists for the intention of amusement and entertainment. In this paper, we present a novel approach for automatic generation of a computer caricature from a facial photograph, which captures artistic deformation styles from hand-drawn caricatures. In order to achieve this, we propose a pseudo stress-strain model to encod...

1997
Vincent van Oostrom

Associate to a rewrite system R having rules l → r, its labelled version R having rules l ◦ m+1 → r • m , for any natural number m ∈ ω. These rules roughly express that a left-hand side l carrying labels all larger than m can be replaced by its right-hand side r carrying labels all smaller than or equal to m. A rewrite system R enjoys finite family developments (FFD) if R is terminating. We sho...

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