Study of lateral-force resistance performance of ‘integration of shelf-structure and main-structure’ shelf structure system

2021 ◽  
Author(s):  
Jiawei Chen ◽  
Zhilin Tao ◽  
Zhen Qu ◽  
Tietuo Tao ◽  
Zhantao Zhang
Keyword(s):  
Lateral Force ◽  
Main Structure ◽  
Structure System ◽  
Resistance Performance

Stability Analysis of Different Stories Single Concrete Framework Due to Bottom Side Column Demolition

2011 ◽  
Vol 90-93 ◽  
pp. 3135-3140
Author(s):  
Sheng Lin Li ◽  
Dian Shu Liu ◽  
Shu Feng Liang
Keyword(s):  
Stability Analysis ◽  
Bending Moment ◽  
Horizontal Direction ◽  
Main Structure ◽  
Structure System ◽  
Cantilever Structure ◽  
Bottom Side ◽  
The Stability ◽  
Stability Of Structure

In this paper, three kinds of single frames including 6, 8 and 10 stories are presented using LS-DYNA software, the stability of structure is studied due to the bottom side column demolition. The results show that the more structure floors, the more side span cantilever structure system collapses. The damage of the junction with the main structure is due to gravity bending moment. The main structure swings back and forth in horizontal direction and damage in some parts of the frame. The more floors, the more the period t of range of main structure movement is longer.

Analysis of Suspended Structure System with Huge Concrete-Filled Tubular Steel Lattice Column

2011 ◽  
Vol 374-377 ◽  
pp. 1593-1597
Author(s):  
Yong Tao Gao ◽  
Peng Bin Fu
Keyword(s):  
High Strength ◽  
Structure Theory ◽  
Structure Form ◽  
Main Structure ◽  
Structure System ◽  
High Rise ◽  
High Rise Building ◽  
Urban Construction ◽  
New Type ◽  
Suspended Structure

In order to meeting high-rise building anti-wind，anti-seismic and land for construction more angespannter situation of urban construction need, introduced a type of new structure which has advantages of seismic dissipation, a great use of materials with high strength and fewer floor spacing：the suspended structure system with huge concrete-filled tubular steel lattice column. Introduced its main structure form, member type and decorate situation by referenced to high-rise building and involved suspended structure theory，ant same time，we state fundamental way and connecting format to this structure system. So we can realize its design features，meditation and innovation case，lay a foundation for spread this new type of structure popularization and application.

Computer Modeling of a Tire under Cornering Loads

1989 ◽  
Vol 17 (2) ◽  
pp. 86-99 ◽  
Author(s):  
I. Gardner ◽  
M. Theves
Keyword(s):  
Finite Element Analysis ◽  
Geometric Approach ◽  
Lateral Force ◽  
Slip Angle ◽  
Element Analysis ◽  
Pressure Distributions ◽  
Slip Effects ◽  
Improved Accuracy ◽  
Nonlinear Geometric ◽  
Good Agreement

Abstract During a cornering maneuver by a vehicle, high forces are exerted on the tire's footprint and in the contact zone between the tire and the rim. To optimize the design of these components, a method is presented whereby the forces at the tire-rim interface and between the tire and roadway may be predicted using finite element analysis. The cornering tire is modeled quasi-statically using a nonlinear geometric approach, with a lateral force and a slip angle applied to the spindle of the wheel to simulate the cornering loads. These values were obtained experimentally from a force and moment machine. This procedure avoids the need for a costly dynamic analysis. Good agreement was obtained with experimental results for self-aligning torque, giving confidence in the results obtained in the tire footprint and at the rim. The model allows prediction of the geometry and of the pressure distributions in the footprint, since friction and slip effects in this area were considered. The model lends itself to further refinement for improved accuracy and additional applications.

Normalization of Tire Force and Moment Data

1993 ◽  
Vol 21 (2) ◽  
pp. 91-119 ◽  
Author(s):  
H. S. Radt ◽  
D. A. Glemming
Keyword(s):  
Surface Water ◽  
Lateral Force ◽  
Slip Angle ◽  
Inflation Pressure ◽  
Slip Ratio ◽  
Tire Force ◽  
Camber Angle ◽  
Potential Benefits ◽  
Overturning Moment ◽  
Semi Empirical

Abstract Semi-empirical theories of tire mechanics are employed to determine appropriate means to normalize forces, moments, angles, and slip ratios. Force and moment measurements on a P195/70R 14 tire were normalized to show that data at different loads could then be superimposed, yielding close to one normalized curve. Included are lateral force, self-aligning torque, and overturning moment as a function of slip angle, inclination angle, slip ratio, and combinations. It is shown that, by proper normalization of the data, one need only determine one normalized force function that applies to combinations of slip angle, camber angle, and load or slip angle, slip ratio, and load. Normalized curves are compared for the effects of inflation pressure and surface water thickness. Potential benefits as well as limitations and deficiencies of the approach are presented.

Simplified Prediction of Ply Steer in Radial Tires

1980 ◽  
Vol 8 (1) ◽  
pp. 3-9 ◽  
Author(s):  
C. W. Bert
Keyword(s):  
Composite Laminate ◽  
Ground Plane ◽  
Lateral Force ◽  
Rolling Contact ◽  
Slip Angle ◽  
Uniform Stress ◽  
Rubber Composite ◽  
Laminate Theory ◽  
Contact Models ◽  
Uniform Stress State

Abstract Ply steer is a rolling contact phenomenon which manifests itself as a lateral force acting at the ground plane of a tire constrained in yaw or a change in slip angle of a tire free to yaw. It has long been known that radial tires generally exhibit greater ply steer than do bias tires. However, the only previously published quantitative analysis of this phenomenon considered the multi-layer cord-rubber composite by means of netting analysis, which is not very accurate at cord angles typical of radial tire belts. A simple, explicit expression is developed herein by combining modern composite laminate theory with two very simple, uniform-stress-state tire-road contact models. The ply-steer results predicted by the resulting expressions are compared with some experimental results and the agreement is found to be reasonably satisfactory.

Measurement and Visualization of the Contact Pressure Distribution of Rubber Disks and Tires

1995 ◽  
Vol 23 (4) ◽  
pp. 238-255 ◽  
Author(s):  
E. H. Sakai
Keyword(s):  
Pressure Distribution ◽  
Contact Pressure ◽  
Contact Area ◽  
Light Absorption ◽  
Lateral Force ◽  
Contact Pressure Distribution ◽  
High Definition ◽  
The Road ◽  
Close Relationship ◽  
Processing Techniques

Abstract The contact conditions of a tire with the road surface have a close relationship to various properties of the tire and are among the most important characteristics in evaluating the performance of the tire. In this research, a new measurement device was developed that allows the contact stress distribution to be quantified and visualized. The measuring principle of this device is that the light absorption at the interface between an optical prism and an evenly ground or worn rubber surface is a function of contact pressure. The light absorption can be measured at a number of points on the surface to obtain the pressure distribution. Using this device, the contact pressure distribution of a rubber disk loaded against a plate was measured. It was found that the pressure distribution was not flat but varied greatly depending upon the height and diameter of the rubber disk. The variation can be explained by a “spring” effect, a “liquid” effect, and an “edge” effect of the rubber disk. Next, the measurement and image processing techniques were applied to a loaded tire. A very high definition image was obtained that displayed the true contact area, the shape of the area, and the pressure distribution from which irregular wear was easily detected. Finally, the deformation of the contact area and changes in the pressure distribution in the tread rubber block were measured when a lateral force was applied to the loaded tire.

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