Thermal Response Analysis and FE Modeling of Weapon

2012 ◽  
Vol 503-504 ◽  
pp. 11-14
Author(s):  
Yan Jun Zhao ◽  
Xin Jun Li ◽  
Yong Hai Wu ◽  
Cheng Xu
Keyword(s):  
Thermal Analysis ◽  
Finite Element ◽  
Temperature Field ◽  
Research Work ◽  
Thermal Response ◽  
Element Model ◽  
Response Analysis ◽  
Fe Modeling ◽  
Effects Of Temperature ◽  
The Finite Element Model

Thermal is a important factor that affect weapon firing accuracy and security in the process of weapon fire, so thermal analysis of weapon has important meaning . Aim at researched Weapon, the finite element model of the gun body was built, the temperature field of the gun body was calculated by FEM. The effects of temperature of the gun body on firer and aiming mechanism were also studied. Current research work will be helpful the weapon design

Thermal Response Analysis of Large Aperture Optical Components

2008 ◽  
Author(s):  
Yi Zhou ◽  
Dong-hui Lin ◽  
Hai Zhou ◽  
Jun-wei Zhang ◽  
Shi-long Wang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Thermal Response ◽  
Element Model ◽  
Optical Component ◽  
Response Analysis ◽  
Optical Components ◽  
Large Aperture ◽  
Confinement Fusion ◽  
The Finite Element Model

This paper analyze the deformation of large aperture optical components under the thermal load based on the finite element model developed using the ANSYS software, which are used for inertia confinement fusion (ICF) experiments. High precision sensors are used to measure the temperature around the optical components in the target building and to form the temperature changing curve. The biggest temperature change is 0.3°C during 2 hours based on the measurement. The change is then loaded on the finite element model of a typical large aperture optical component to get the deformation of the optical component. The results indicate that the deformation of the optical component can satisfy the stability requirement in the current environment. Meanwhile, the deformation of the optical component is calculated for different temperature changes and the results show that the deformation of the optical component have a direct relationship with the change of temperature.

The Wind Load Analysis of a Cable Net Structure

2013 ◽  
Vol 811 ◽  
pp. 228-233
Author(s):  
Yang Yang ◽  
Yuan Ying Qiu ◽  
Gai Juan Wang
Keyword(s):  
Finite Element ◽  
Element Model ◽  
Wind Load ◽  
Nonlinear Finite Element ◽  
Response Analysis ◽  
Nonlinear Finite Element Method ◽  
Form Finding ◽  
Load Analysis ◽  
The Given ◽  
The Finite Element Model

The response analysis of a large cable net bearing wind load is conducted by the nonlinear finite element method. First, the form-finding calculation of the cable net structure is carried out to find an equilibrium state which can make the pretensions and sags of the wires meet the given requirements. Then the static analyses of the finite element model of the cable net structure under different wind loads are conducted to assess whether the cable net structure meets the requirements for strength. The work of this paper establishes the foundation for the design of a large cable antenna.

Analysis of the Temperature Field of the Diamond Wheel Dressed Using Laser Assisted Ultrasonic-Vibration Combined Dressing Method

2016 ◽  
Vol 874 ◽  
pp. 261-267 ◽  
Author(s):  
Zhi Bo Yang ◽  
Zhen Zhang ◽  
Rui Yun Yang ◽  
Ai Ju Liu
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Finite Element Model ◽  
Ultrasonic Vibration ◽  
Working Conditions ◽  
Element Model ◽  
Diamond Wheel ◽  
Dressing Method ◽  
Infrared Temperature Measurement ◽  
The Finite Element Model

During the dressing process of diamond wheel using laser/ultrasonic-vibration combined dressing method, the removal mode of the local materials on the surface of wheel with the use of laser’s heating effect transits from brittle fracture to plastic flow, so that the wear of diamond dresser can be reduced and the dressing efficiency and surface dressing quality can be improved. Using ANSYS analysis software, the three-dimensional units were used and the nonlinearity of the material’s thermophysical properties was taken into account, and thereby, the finite element model of the temperature field of the diamond wheel heated by the laser during the dressing process was constructed. Then, the distributions of the temperature field on the surface and section of the wheel under different technological parameter were acquired. Moreover, the temperature distribution of the dressed wheel under actual working conditions was measured using infrared temperature measurement method. The results indicate that, under the same working conditions, the simulation results using finite element model fit well with the measured values, i.e., the finite element model has important guiding significance to the selection of technological parameters in dressing.

scholarly journals Design and FE Modeling of UPVC Corrugated Hollow Roofing Sheet

2019 ◽  
Vol 258 ◽  
pp. 01017
Author(s):  
Djoko Setyanto
Keyword(s):  
Finite Element ◽  
Lift Force ◽  
Static Load ◽  
Element Model ◽  
Peak Height ◽  
Effective Width ◽  
Fe Modeling ◽  
Roof Structure ◽  
The Finite Element Model ◽  
Load Mass

The corrugated roofing sheet of UPVC polymer material is the potential material to replace common roof materials that has been developed in Indonesia. This study describes the design of the roof profile and analysis of the roof structure to static load. The resulting roof profile is a hollow corrugated roofing sheet with five crests and four valleys. The effective width is 860 mm, 10 mm cavity thick, and 45 mm peak height. The finite element model of the hollow UPVC corrugated sheets roof structure shows that the roof structure is capable of withstanding the static load/ mass of 133 kg equivalent of two applicators and capable of withstanding the wind lift force equivalent to 99 km/ h.

Analysis of Dynamic Characteristic of Numerical Remanufacture Machine's Feeding System

2010 ◽  
Vol 156-157 ◽  
pp. 1360-1365
Author(s):  
Qiu Lin Pu ◽  
Xiao Diao Huang ◽  
Wen Zheng Ding
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Operating Conditions ◽  
Ball Screw ◽  
Response Analysis ◽  
Feeding System ◽  
Nature Frequency ◽  
Grinding Machine ◽  
The Finite Element Model

In this paper,the ball screw feeding system’s dynamic characteristics of a numerical remanufacture grinding machine is analyzed using the FEM. Discusses the modeling method of ball screw system into the finite element model and established the combination of finite element model. Through the modal analysis and the harmonious response analysis, the nature frequency and vibration mode of the feeding system and typical operating conditions of excitation in the harmonic responsehave have been gotten,thus the dependable basis for the construction’s optimization and dynamic function’s increasing of the feeding system is provided, ensure the numerical remanufacture will be success.

Dynamic Response Analysis of Ship Hull Structures

2000 ◽  
Vol 37 (03) ◽  
pp. 117-128
Author(s):  
T. V. S. R. Appa Rao ◽  
Nagesh R. Iyer ◽  
J. Rajasankar ◽  
G. S. Palani
Keyword(s):  
Finite Element ◽  
Finite Elements ◽  
Dynamic Response ◽  
Finite Element Model ◽  
Element Model ◽  
Ship Hull ◽  
Response Analysis ◽  
Dynamic Response Analysis ◽  
Hull Structure ◽  
The Finite Element Model

Finite-element modeling and use of appropriate analytical techniques play a significant role in producing a reliable and economic design for ship hull structures subjected to dynamic loading. The paper presents investigations carried out for the dynamic response analysis of ship hull structures using the finite-element method. A simple and efficient interactive graphical preprocessing technique based on the "keynode" concept and assembly-line procedure is used to develop the finite-element model of the hull structure. The technique makes use of the body plan of a ship hull to build the finite-element model through an interactive session. Stiffened plate/shell finite elements suitable to model the hull structure are formulated and used to model the structure. The finite elements take into account arbitrary placement of stiffeners in an element without increasing the number of degrees-of-freedom of the element. A three-dimensional finite-element model and a procedure based on the Bubnov-Galerkin residual approach are employed to evaluate the effects of interaction between the ship hull and water. Mode superposition technique is used to conduct the dynamic response analysis. The efficiency of the finite elements and the procedures is demonstrated through dynamic analysis of a submerged cantilever plate and a barge when both are subjected to sinusoidal forces. The dynamic responses exhibit expected behavior of the structure and a comparison with the results available in the literature indicate superior performance of the finite element and methodologies developed. Thus, the finite-element models and the procedures are found to be efficient and hence suitable for the dynamic analysis of similar structures.

Study on Random Vibration Response Analysis for the Sphere Cylinder Assembly in Aerospace Vehicle

2014 ◽  
Vol 680 ◽  
pp. 258-262
Author(s):  
De Lin Sun ◽  
Zhe Zhao ◽  
Kun He ◽  
Ri Dong Liao
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Basic Principle ◽  
Random Vibration ◽  
Structural Strength ◽  
Element Model ◽  
Vibration Response ◽  
Response Analysis ◽  
Vibration Load ◽  
The Finite Element Model

To assess the structural strength of spherical cylinder, the finite element model was constructed by the NX NASTRAN software. Firstly,the basic principle of random vibration response analysis was introduced, then the random vibration response analysis of the cylinder assembly was analyzed. The simulation result shows that the stress of the joint between spherical cylinder clamp and the base is larger than other areas in conditions of a given random vibration load. The spherical cylinder structure is safe and that the maximum RMS stress is about 20 MPa.

Temperature Field Analysis of LNG Tank under Ultra-Low Temperature Based on Finite Element Method

2015 ◽  
Vol 733 ◽  
pp. 566-569
Author(s):  
Ming Shuo Yang ◽  
Bin Zhao ◽  
Jing Wei Liu ◽  
Hong Gang Cai
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Temperature Field ◽  
Low Temperature ◽  
Element Model ◽  
Field Analysis ◽  
Lng Tank ◽  
Simulation Parameters ◽  
The Finite Element Model ◽  
Element Method

LNG tank has extremely low operating temperature, hazardous storage medium and large capacity storage space, therefore it is necessary to carry out temperature field analysis for LNG tank under Ultra-low temperature, and the temperature of LNG tank under Ultra-low temperature is simulated based on finite element method. Firstly, the finite element model of temperature field is analyzed. Secondly, the simulation parameters of LNG tank under Ultra-low temperature are given. Finally, the simulation results are carried out, and the temperature field of LNG tank under Ultra-low temperature is obtained.

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