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Abstract

The high stresses in the joints of chassis frames subject to torsion are estimated theoretically and confirmed by tests on photoelastic models. The joints considered are between channel section cross members welded or continuously attached to the webs of channel section side members. The detailed stress distribution in the side members has been estimated using classical plate theory to find the forces resisting the warping displacements of the cross members. Models of joints and a complete frame were made from channel section castings of birefringement material and coated with reflective material to allow the use of a reflection polariscope to analyse the stress distribution. The theoretical results were compared with the results from approximate theories as well as with the photoelastic test results.

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References

Vlasov

V. S.

Thin walled elastic beams, Israel Programme for Scientific Translations, Jerusalem 1961.

Doich

An approach to the calculation of an automobile frame in torsion. Avtom Prom, No. 6, 1961 (in Russian).

Gelf'gat

D. B.

Oshokov

V. A.

Commercial vehicle chassis frames, Masgiz, 1959 (in Russian).

Zaks

M. N.

Calculations of torsional stiffness of commercial vehicle frames with flexible joints. Avtom Prom, No. 4, 1964 (in Russian).

Zaks

M. N.

Belokurov

V. N.

Investigation of the soft joint layout in a twisted automobile frame. Avtom Prom, No. 5, 1971 (in Russian).

Zaks

M. N.

Belokurov

V. N.

Control of torsional stiffness of the automobile frame. Avtom Prom, No. 4, 1972 (in Russian).

Zaks

M. N.

Belokurov

V. N.

Bimoment equation in a soft joint of an automobile frame. Avtom Prom, No. 5, 1973 (in Russian).

Erz

Uber die durch unbebenheiten der Fahrbahn Hervorgerufene Verdrenung von strassenfahrzeuge. ATZ, No. 4 April, No. 6 June, No. 11 Nov., No. 12 Dec. 1957.

Marshall

P. H.

Roach

A. A.

Tidbury

G. H.

Torsional stiffness of commercial vehicle chassis frames. FISITA XII Congress, Barcelona, 1968.

10.

Tidbury

G. H.

The torsional stiffness of an open section thin walled beam in terms of bimoments and the generalisation of partial warping inhibition boundary conditions. Motor and Vehicle Conference, Belgrade, 1974.

11.

Mills

Johnson

P. F.

Stress, vibration and noise analysis in vehicles. Institute of Physics, Stress Analysis Group Annual Conference 1974, Aston, Birmingham.

12.

Megson

T. G. H.

Alade

G. A.

Structural analysis of ladder frames under torsion. Proc. Instn. Mech. Engrs 1976, 190, 409–418.

13.

Beerman

H. J.

Calculation of the behaviour of torsionally flexible frames of commercial vehicles with non-rigid nodes. Automobile Industrye, 2/76 (in German).

14.

Mishke

Common and distinguishing features in the development of light and heavy trucks. Function versus appearance in vehicle design, Institution of Mechanical Engineers Conference, Birmingham, 1978.

15.

Romanow

Slowka

Zablochi

Calculation of lorry frames, taking into consideration the theory of restrained torsion. Politechnika Wroclawska IKEM, 1976 (in German).

16.

Zaks

M. N.

Stress state in the joint of a twisted automobile frame. NAMI Proceedings, No. 61, 1963 (in Russian).

17.

Kobrin

M. N.

Kilimnik

Sh. Titov

A. A.

Investigation of the stress state and durability of (vehicle) frame side member walls at the point of load transfer. Avtom Prom, No. 11, 1969 (in Russian).

18.

Alvi

M. S.

The stress distribution in the joints of vehicle chassis frames subject to torsion. PhD thesis, School of Automotive Studies, Cranfield Institute of Technology, 1978.

19.

Timoshenko

Woinowsky-Krieger

Theory of plates and shells, 2nd Edn, McGraw-Hill, 1959.

The Theoretical and Photoelastic Investigation of Stresses in Chassis Frame Joints

Abstract

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References