Fatigue Behavior of Spot Welds under Variable-Amplitude Loading

Format:

Conference/Event

Author/Creator:

Barsom, J. M., author.

Conference Name:

SAE International Congress & Exposition (1985-02-25 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1985

Summary:

This paper presents data and methods for predicting fatigue lives of spot welds subjected to variable amplitude random-sequence load fluctuations. An equivalence between the fatigue behavior of spot welds under constant amplitude and under variable-amplitude cyclic-load fluctuations is also established by using an effective damage-parameter range approach.The analyses presented show that the damage parameter for fatigue of spot welds is where ΔP and ΔθN are the fluctuations in the applied stress and in the nugget rotation respectively. The analyses also show that the effective damage-parameter range derived by using the Miner cumulative damage law, EMiner', resulted in an excellent correlation of fatigue lives for spot welds under variable-amplitude and constant-amplitude cyclic loading. The root-mean-square, RMS, damage-parameter range, resulted in a conservative correlation

Notes:

Vendor supplied data

Publisher Number:

850369

Access Restriction:

Restricted for use by site license