Finite element computational development for thermo-mechanical analysis of plane steel structures exposed to fire

Corrugated steel plate and surrounding soils are working together to share the load in buried corrugated steel structures. It is complicated to consider the structure-soil interaction, so the finite element method has already become the chief means of complicated structure analysis. Based on a practical project, considering structure-soil interaction, by using the finite element program of ANSYS, the paper set up a 2-D FE model and analyzed the soil pressure, the structural deformation and the internal force under different load conditions in detail. The analysis shows that structure-soil interaction has brought about stresses redistribution of surrounding soils, and adverse effects of soil pressure and displacement were limited. The variation range of soil pressure on the crown of arch increases with the load increases and the peak value of soil pressure approach to the code value and a rebound appears in the vehicle load range. The tendencies of vertical soil displacement are nearly the same to different load conditions, and the peak value of moments has an obvious change and can be influenced greatly by deflective load.

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Study on the Local Buckling Behavior of Steel Equal Angle Members under Axial Compression with the Steel Strength Variation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.374-377.2430 ◽

2011 ◽

Vol 374-377 ◽

pp. 2430-2436

Author(s):

Gang Shi ◽

Zhao Liu ◽

Yong Zhang ◽

Yong Jiu Shi ◽

Yuan Qing Wang

Keyword(s):

Finite Element ◽

Axial Compression ◽

High Strength Steel ◽

Local Buckling ◽

Steel Structures ◽

High Strength ◽

Element Analysis ◽

Equal Angle ◽

Buckling Behavior ◽

Steel Strength

High strength steel sections have been increasingly used in buildings and bridges, and steel angles have also been widely used in many steel structures, especially in transmission towers and long span trusses. However, high strength steel exhibits mechanical properties that are quite different from ordinary strength steel, and hence, the local buckling behavior of steel equal angle members under axial compression varies with the steel strength. However, there is a lack of research on the relationship of the local buckling behavior of steel equal angle members under axial compression with the steel strength. A finite element model is developed in this paper to analyze the local buckling behavior of steel equal angle members under axial compression, and study its relationship with the steel strength and the width-to-thickness ratio of the angle leg. The finite element analysis (FEA) results are compared with the corresponding design method in the American code AISC 360-05, which provides a reference for the related design.

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A 3D solid-like frame finite element applied to steel structures under high temperatures

Finite Elements in Analysis and Design ◽

10.1016/j.finel.2014.07.005 ◽

2014 ◽

Vol 91 ◽

pp. 68-83 ◽

Cited By ~ 5

Author(s):

Ronaldo Rigobello ◽

Humberto Breves Coda ◽

Jorge Munaiar Neto

Keyword(s):

Finite Element ◽

High Temperatures ◽

Steel Structures ◽

3D Solid

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Replacement of metallic parts for polymer composite materials in motorcycle oil pumps

Journal of Reinforced Plastics and Composites ◽

10.1177/0731684416673727 ◽

2016 ◽

Vol 36 (2) ◽

pp. 149-160 ◽

Cited By ~ 6

Author(s):

Sandro Donnini Mancini ◽

Antídio de Oliveira Santos Neto ◽

Maria Odila Hilário Cioffi ◽

Eduardo Carlos Bianchi

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Glass Transition ◽

Glass Fiber ◽

Dynamic Mechanical Analysis ◽

Mechanical Analysis ◽

Neutral Medium ◽

Element Analysis ◽

Dynamic Mechanical ◽

Oil Pump

A feasibility study was conducted to determine the use of polyphthalamide/glass-fiber and polyphthalamide/glass-fiber/polytetrafluoroethylene-based composites as substitutes for aluminum and steel, respectively, in the production of motorcycle oil pump parts (housing, shaft/inner gerotor and outer gerotor). New and used (80,000 km) oil pumps were subjected to performance tests, whose results indicated that the pressure and temperature of the used pump reached a maximum of 1.8 bar and 93℃, respectively. Thermogravimetric analysis indicated that the materials are stable at the maximum operating temperature, which is 20℃ lower than the minimum glass transition temperature obtained by dynamic mechanical analysis for both materials at the analyzed frequencies (defined after calculations based on rotations in neutral, medium and high gear). The pressure value was multiplied by a safety factor of at least 1.6 (i.e., 3 bar), which was used as input for a finite element analysis of the parts, as well as the elasticity modulus at glass transition temperatures obtained by dynamic mechanical analysis. The finite element analysis indicated that the von Mises stresses to which the composite parts were subjected are 7 to 50 times lower than those the materials can withstand. The results suggest that it is feasible to manufacture motorcycle oil pump parts with these composites.

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