Research of the Thermal Performance of a New Type of Rock Wool Color Steel Sandwich

2013 ◽  
Vol 482 ◽  
pp. 81-84
Author(s):  
Ke Wei Ding ◽  
Wu Sun ◽  
Dong Chen
Keyword(s):  
Finite Element ◽  
Performance Analysis ◽  
Thermal Performance ◽  
Finite Element Software ◽  
Interior Wall ◽  
Wall Panels ◽  
New Ideas ◽  
New Type ◽  
Rock Wool

This paper introduces a new type of rock wool color steel sandwich which is produced by Anhui sambo steel co.,Ltd. The thermal performance analysis of this kind of sandwich is conducted through the finite element software ANSYS in this paper, which reveal the widespread existence of cold bridge phenomenon. And this paper also propose several new ideas on how to reduce the cold bridge condensation of interior wall panels of building.

scholarly journals The influence of coupling on the whole process of construction simulation of chord dome structure

2020 ◽  
Vol 143 ◽  
pp. 01046
Author(s):  
Jing Liu ◽  
Fei Meng ◽  
Yingqi Chen ◽  
Zongxue Chen
Keyword(s):  
Finite Element ◽  
Steel Structure ◽  
Simulation Models ◽  
Construction Simulation ◽  
Construction Process ◽  
Finite Element Software ◽  
Whole Process ◽  
New Type ◽  
Dome Structure ◽  
Hoop Direction

：Chord dome structure is a new type of hybrid prestressed spatial steel structure system, which is often used in large-span structures. During the construction of the structure, it is necessary to apply prestress to the ring cable. Taking the chord dome roof of Hebei North University gymnasium as an example, the whole process of prestressed cable construction is simulated and analyzed by using the finite element software ANSYS. The hoop cable of the dome roof can slide freely in the hoop direction, and the attribute of free sliding in the ANSYS interface is "coupling". In this paper, two kinds of simulation models, coupling and uncoupling, are established to compare, and then to explore the influence of coupling on the construction process of string dome structure.

scholarly journals A Braked Tail Cover Separation Concept and Simulation of Separation Process

2018 ◽  
Vol 166 ◽  
pp. 02003
Author(s):  
Mei Huang ◽  
Yi Jiang ◽  
Boman Wang
Keyword(s):  
Finite Element ◽  
Working Conditions ◽  
Large Scale ◽  
Rocket Engine ◽  
Separation Process ◽  
Separation Device ◽  
Internal Ballistic ◽  
Finite Element Software ◽  
New Type

Large-scale missiles are generally catapulted by the ejector. And a tail cover is used to protect the first stage rocket engine. When the missile reaches the predetermined height, the tail cover should be separated timely so that the engine can work properly. In this paper, a braked tail cover separation concept is proposed. And a new type of tail cover separation device is designed according to the concept. Firstly, the forces analysis and the internal ballistic simulation of ejection are conducted before setting working conditions. And then, the finite element software Abaqus is adopted to achieve the simulation of tail cover separation process. Through analyzing the obtained results, it’s concluded that the braked tail cover separation concept is feasible. Moreover, the influence of material changes on the braking effects is also studied.

Finite Element Analysis about Temporary Bracing of Prefabricated Column of Prefabricated Structure

2013 ◽  
Vol 275-277 ◽  
pp. 1180-1183
Author(s):  
Wan Yun Yin ◽  
Dong Chen ◽  
Xiao Yang ◽  
Ke Wei Ding ◽  
Ren Cai Jin ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Lodging Resistance ◽  
Element Analysis ◽  
Finite Element Software ◽  
Support Frame ◽  
Precast Column ◽  
New Type ◽  
Prefabricated Structure

Based on the features of lifting construction of prefabricated structure, propose a new type of temporary bracing of prefabricated column, and analyze the two different structural forms of the traditional prefabricated column bracing frame and the new prefabricated column bracing frame by finite element software ANSYS. The results show that the new precast column support frame have a better stability and stronger lodging resistance

Design guidelines and optimization of ultra-high-performance fibre-reinforced concrete blast protection wall panels

2020 ◽  
Vol 11 (4) ◽  
pp. 494-514
Author(s):  
Mohtady Sherif ◽  
Hesham Othman ◽  
Hesham Marzouk ◽  
Hassan Aoude
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
High Performance ◽  
Optimization Techniques ◽  
Blast Load ◽  
Fibre Reinforced Concrete ◽  
Blast Loads ◽  
Finite Element Software ◽  
Wall Panels ◽  
High Performance Fibre

Ultra-high-performance fibre-reinforced concrete is the latest generation of structural concrete, having outstanding fresh and hardened properties; this includes the ease of placement and consolidation with ultra-high mechanical properties, as well as toughness, volume stability, durability, higher flexural and tensile strength, and ductility. As more research is being focused on it, the material behaviour and characteristics are getting more understood, and the research demand for the special applications of the ultra-high-performance fibre-reinforced concrete is growing higher. One special application that ultra-high-performance fibre-reinforced concrete is thought to have an outstanding performance at is in the field of protective structures, specifically against blast loads. This article presents part of a study that is concerned with the behaviour and response of ultra-high-performance fibre-reinforced concrete wall panels under blast load. Size and shape optimization techniques were combined in this study to optimize the design of a 200-MPa ultra-high-performance fibre-reinforced concrete under blast loads using finite element modelling. This design optimization aims to maximize stiffness and minimize the cost while satisfying both design stresses and construction requirements. The design variable to be optimized for are the thickness ranging from 100 to 300 mm at 25 mm increments, in addition to the reinforcement ratio of 0%, 0.2%, 1% and 3%, and aspect ratio of 1, 1.5 and 2; the boundary condition is four edges fixed and restrained. The numerical simulation has been performed using an explicate finite element software package. The complete behaviour of an ultra-high-performance fibre-reinforced concrete is defined using the concrete damaged plasticity model. The concrete constitutive model has been developed considering the contribution of tensile hardening response, fracture energy and crack-band width approaches to accurately represent the tensile behaviour and guarantee mesh independence of results. The blast load is applied using the Conventional Weapons method of the US Army Corps of Engineers that is readily available in the finite element software. The validity of the numerical model used is verified by comparing numerical results to experimental data.

Numerical Simulation of a Circumferential Cutting Warhead about Anti-Light Armor

2013 ◽  
Vol 706-708 ◽  
pp. 1454-1457
Author(s):  
Yong Jie Xu ◽  
Guo Dong Wu ◽  
Shao Lei Liang ◽  
Zhi Jun Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Formation Process ◽  
Shaped Charge ◽  
Curvature Radius ◽  
Finite Element Software ◽  
Damage Probability ◽  
Optimization Simulation ◽  
New Type ◽  
Block Area

In order to improve the block area and damage probability to targets, a new type warhead of circumferential cutter is presented. The optimization simulation is designed for the circumferential cutter warhead by using LS-DYNA finite element software. The detonation mode and the liner curvature radius are two important factors, which influence the formation process of circumferential cutting warhead. The result shows that priority should be given to use the upper and lower ends at the same time blasting technique. The shaped charge liner curvature radius and shot elevation ratio should be controlled in between 0.9 and 1.1.The warhead can be envisaged to achieve the desire of circumferential cutting.

Study of Dynamic Characteristic of Friendship Avenue Bridge

2011 ◽  
Vol 311-313 ◽  
pp. 1305-1308
Author(s):  
Wei He ◽  
Rong He ◽  
Sheng Tai Yan
Keyword(s):  
Boundary Condition ◽  
Finite Element ◽  
Dynamic Analysis ◽  
Dynamic Characteristic ◽  
Dynamic Characteristics ◽  
Steel Tube ◽  
Wind Resistance ◽  
Finite Element Software ◽  
Long Span ◽  
New Type

Friendship Avenue bridge was a concrete-filled steel tube arch bridge (CFSTAB). As a new type of bridge, CFSTAB was widely constructed and rapid developed in China. Because of its merits, CFSTAB was constructed much more in China. With the span increasing rapidly, and the bridge gradually becoming thin, the long span CFSTAB should be paid more attention for its performance of aseismic, wind resistance and vehicle-bridge vibration.This article described the basic method of dynamic analysis for CFSTAB. And the Friendship Avenue CFSTAB was taken as an example, such as the choice of element types, conducted boundary condition and applying load were described in process of modeling FEM for it, and of which the dynamic characteristics was analyzed by finite element software ANSYS.

Studies on In-Plane Stability Behavior of Arches with Web Openings

2012 ◽  
Vol 193-194 ◽  
pp. 1296-1299
Author(s):  
Li Yun Jiang ◽  
Man Xiang Liu ◽  
Li Qiang Kang
Keyword(s):  
Finite Element ◽  
Structural Member ◽  
Buckling Load ◽  
Buckling Mode ◽  
Web Openings ◽  
Stability Behavior ◽  
Structural Efficiency ◽  
Finite Element Software ◽  
New Type

As a new type structural member, the steel arch with web openings combines the features of both arches and members with web openings and its applications has been found. Studies on in-plane stability behavior of two-hinged arches with web hexagonal openings are made using Eigen buckling model of the finite element software ANSYS. The buckling load and buckling mode are obtained and the in-plane buckling mode is antisymmetrical. It is shown that buckling load decreases gradually as the circumcircle radius of openings increases and it increases as the gap between openings increases through analysis of buckling load with different parameters such as r/h, g/h, f/l. It can be found that the structural efficiency is the highest when the radius of openings is 0.3h with the aid of optimized function.

Study on the Impact Properties of a New Debris Flow Dam Based on Steel-Concrete Composite Structure

2014 ◽  
Vol 638-640 ◽  
pp. 2056-2059 ◽  
Author(s):  
Ya Xiong Liang ◽  
Xiu Li Wang ◽  
Chang Wu ◽  
Zhi Gang Lv
Keyword(s):  
Finite Element ◽  
Debris Flow ◽  
Impact Force ◽  
Impact Load ◽  
Weak Link ◽  
Time History ◽  
Type Model ◽  
Finite Element Software ◽  
New Type ◽  
The Impact

The impact force is one of the most weak link of the dynamics studies of debris flow for many years. To make the structure or components are better able to suffer the impact load such as debris flow, explosions, a new debris flow dam is designed by introducing this new type model with spring. It is simulated under boulder impact by using finite element software LS-DYNA.The stress distribution, impact and displacement time history curve under typical conditions are obtained. The results show that the resist impact effect of new debris flow dam is very obvious.

Design of a New Structure for Anti-Upsetting of Axle-End in Wheelset Disassembly and Assembly

2011 ◽  
Vol 383-390 ◽  
pp. 372-378
Author(s):  
Yong Gan ◽  
Jun Xiao ◽  
Qun Wang
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Special Structure ◽  
Finite Element Software ◽  
New Type

This paper presents a new type of anti-upsetting equipment, which is used to avoid upsetting of axle-end in wheelset disassembly and assembly. The special structure of the equipment can transmit the cylinder’s pressure to the axle-end rationally and eliminate eccentric-loaded or partial stress concentration on the section of the axle-end. The anti-upsetting equipment has been analyzed and verified with the finite element software. This new type of anti-upsetting equipment is applied on an automatic wheelset disassembly and assembly machine to ensure the anti-upsetting on axle-end.

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