Multiaxial fatigue behaviour of laserbeam-welded thin steel and aluminium sheets under proportional and non-proportional combined loading
Source abstract
Abstract
Abstract Laserbeam-welded overlapped tubular joints made from structural steel St35 (S235 G2T), artificially hardened aluminium alloy AlSi1MgMn T6 (EN AW 6082 T6) and self-hardening aluminium alloy AlMg3.5Mn (EN AW 5042) were investigated under combined proportional and non-proportional axial and torsional loading with constant amplitudes in the range of 2 × 10 4 –1 × 10 7 cycles. The multiaxial fatigue behaviour of these joints was assessed by the notch stress concept with the reference radius r ref = 0.05 mm. The equivalent stresses, especially considering the fatigue life reducing influence of non-proportional loading in comparison to proportional loading, were calculated by a recently developed hypothesis, which is called the Stress Space Curve Hypothesis (SSCH). This hypothesis is based on the time evolution of the stress state during one load cycle.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · Structural Load-Bearing Analysis · Mechanical Behavior of Composites
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References (15)
Show source-provided references
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