Measured and Predicted Wave Plus Current Loading on a Laboratory-Scale, Space Frame Structure

1987 ◽  
Author(s):  
J.H. Allender ◽  
C. Petrauskas
Keyword(s):  
Scale Space ◽  
Laboratory Scale ◽  
Frame Structure ◽  
Space Frame ◽  
Current Loading ◽  
Space Frame Structure

Simulation of Shock Response in a Lab-Scale Space Frame Structure Using Finite Element Analysis

2011 ◽  
Author(s):  
Jagadeep Thota ◽  
Mohamed B. Trabia ◽  
Brendan J. O’Toole
Keyword(s):  
Finite Element ◽  
Impact Loading ◽  
Scale Space ◽  
Frame Structure ◽  
Frame Structures ◽  
Fe Model ◽  
Space Frame ◽  
Element Analysis ◽  
Acceleration Signals ◽  
Space Frame Structure

Space frames are usually used to enhance the structural strength of a vehicle while reducing its overall weight. Impact loading is a critical factor when assessing the functionality of these frames. In order to properly design the space frame structure, it is important to predict the shocks moving through the members of the space frame. While performance of space frame structures under static loads in well-understood, research on space frame structures subjected to impact loading is minimal. In this research, a lab-scale space frame structure, comprising of hollow square members that are connected together through bolted joints which allow for quick assembly/disassembly of a particular section, is manufactured. Non-destructive impact tests are carried out on this space frame structure and the resulting acceleration signals at various locations are recorded. A finite element (FE) model of the lab-scale structure is created and simulated for the experimental impact loads. Acceleration signals from the FE model are compared with the experimental data. The natural frequencies of the structure are also compared with the results of the FE model. The results show a good match between the model and the experimental setup.

The Application of Slip Joint Use in Space Frame Structure for Vehicle

2013 ◽  
Vol 423-426 ◽  
pp. 1944-1947
Author(s):  
Sheng Yun Lee ◽  
Ting Hao Cheng ◽  
Yu Ting Lin
Keyword(s):  
Dimensional Accuracy ◽  
Element Model ◽  
Frame Structure ◽  
Poor Control ◽  
Space Frame ◽  
Space Frames ◽  
The Common ◽  
The Finite Element Model ◽  
Joint Method ◽  
Space Frame Structure

The purpose of this paper is to analysis the finite element model of joint methods for chassis space frames of vehicles. Common tee-joint often have poor control of dimensional accuracy. The analysis includes the common tee-joint and new joint method. Although the new joint method will increase in weight a little and easily adjust the accuracy of space frame, it will also improve the connection strength.

Analysis and test flight of drone frame using space frame structure

2020 ◽  
Vol 2020 (0) ◽  
pp. J19129
Author(s):  
Kazuki FUJITA ◽  
Toshiki YOSHIIKE ◽  
Takuya NEGISHI ◽  
Yumio MORIYA ◽  
Takaya KITAHORA ◽  
...  
Keyword(s):  
Frame Structure ◽  
Space Frame ◽  
Test Flight ◽  
Space Frame Structure

Research on Space Frame Structure in Regard of Member Initial Stress

2013 ◽  
Vol 351-352 ◽  
pp. 998-1003
Author(s):  
Mao Qing Liu ◽  
Jun Xu ◽  
Xin Xi Du
Keyword(s):  
Initial Stress ◽  
Cross Section ◽  
Computational Models ◽  
Initial Imperfection ◽  
Frame Structure ◽  
Economic Factors ◽  
Space Frame ◽  
Element Analysis ◽  
Stress Ratios ◽  
Space Frame Structure

To reveal the harm of member initial stress on space frame structure, several models which are different in initial imperfection methods, material computational models and upper optimized stress ratios are employed to do nonlinear finited element analysis. It finds that the initial stress method and Marshall model are more accurate to simulate. When design the space frame structure, it must be avoided to optimize the cross section excessively in pursuit of economic factors.

Study on the Frame Structure under Nonuniform Settlement

2011 ◽  
Vol 94-96 ◽  
pp. 830-833 ◽  
Author(s):  
Dong Mei Zhao ◽  
Ying Xu Zhao ◽  
Yan Xia Ye
Keyword(s):  
Axial Force ◽  
Shear Force ◽  
Bending Moment ◽  
Elastic Support ◽  
Frame Structure ◽  
Space Frame ◽  
Nonuniform Settlement ◽  
Space Frame Structure ◽  
Support Model

In this paper, the effect of the non-uniformity settlement of ground foundation on the upper frame structure is studied. It takes a four-story space frame structure with two spans as an example. The different pedestals are installed at the joint of column footing, which respectively form the fixed supported model and the elastic supported model. Basin shaped settlement is applied in each model. The result shows that the beams are principally suffered with the bending moment and the columns principally suffered with axial force, shear force and bending moment, and that the elastic support model has certain economy.

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