نتایج جستجو برای: psychological element
تعداد نتایج: 342354 فیلتر نتایج به سال:
In this paper a Romanesque masonry church is analysed in order to assess its structural behaviour and its seismic vulnerability with respect to the actual state of conservation. Starting from a specific case study, a contribution to the issue of modelling and analysis of monumental masonry buildings under seismic action is provided. A finite element methodology for the static and dynamic nonlin...
Windmill, machine that converts wind into useful energy. This energy is derived from the force of wind acting on oblique blades or sails that radiate from a shaft. The turning shaft may be connected to machinery used to generate electricity. The present paper makes an attempt to show the effect of wind and earthquake load on tubular type windmill and its foundation considering hard, medium and ...
Knitted textiles have been used in medical applications due to their high flexibility and low tendency to fray. Their mechanics has, however, received limited attention compared to woven fabrics used as technical textiles e.g. in aerospace and as composite reinforcements. A constitutive model for soft tissue using a strain energy function was extended, by including shear and increasing the numb...
Abstract: It is easy for composite laminates to be damaged by relative lower velocity impact which could give rise to internal delamination that will strongly weaken the compressive strength of laminates. In order to predict the occurrence of matrix failure, the elastic-brittle behaviors of fiber-reinforced composites were modeled constitutively by an anisotropic damage model. The dynamic tensi...
When the foundations of structures under cyclic loading with amplitudes less than their permissible load, the concern exists often for the amount of uniform and non-uniform settlement of such structures. Storage tank foundations with numerous filling and discharging and railways ballast course under repeating transportation loads are examples of such conditions. This paper deals with the effect...
The first stage of the RTM process concerns the preforming of the part. During the preforming of multilayered reinforcements, frictions between the plies occur. An experimental device designed to analyse the ply/ply, ply/tool and yarn/yarn frictions has been set up. Specific contact behaviour for ply/ply friction is directly related to shocks taking place between overhanging yarns of each sampl...
A headed reinforcing bar is a new type of reinforcement with a T-shaped anchor connected to the end of a reinforcing bar. Conceptually, the bar is usually a tension member or compression one depending on structural engineering applications. The T-shaped anchor, referred to as head in the rest of this report is a relatively stiff steel "plate" in terms of its structural behavior. When embedded i...
Recycle Aggregate Concrete (RAC) is a common “green” product used for a variety of purposes, although the durability and strength of the material still need more research to adequately determine influences on these parameters. The failure pattern, punching bearing capacity, and deflection variation of wallboard of both ordinary concrete and RAC with various rebar reinforcement diameters and spa...
Abstract. We formulate a new free-boundary type mathematical model describing the interac4 tion between a shell and a mesh-like structure consisting of thin rods. Composite structures of this 5 type arise in many applications. One example is the interaction between vascular walls treated with 6 vascular devices called stents. The new model embodies two-way coupling between a 2D Naghdi 7 type sh...
Nowadays, due to the advances of many industries people tend to travel much more in compared to the past. Without any doubt, various types of climates and weathers, vemacular diseases, changes in life style and qualitative and quantitative changes of nutrition are all the factors of which many diseases occur during trips. Travel associated anxieties and fears are common. It has been suggested t...
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