StressCheck Tutorial: Usage of the Force/Moment Method for Arbitrary Cross Sections
Abstract: Usage of the Force/Moment method to apply force/moment vectors to an arbitrarily-shaped cross section through a location in 3D space as defined by a local system. The resulting traction distribution will be a statically equivalent linear stress distribution. When checking the applied Force/Moment load record, using the same local system for the check should return the force/moment vectors.
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“At DST Group, we have effectively used StressCheck® over the last 10 years to determine accurate stress intensity factors. The results have been used to improve our residual strength and structural life estimates for aircraft in service with the Royal Australian Airforce, including C-130, P-3C and F/A-18 A/B. We have found it to be extremely easy to use and a very versatile code with which to create parametric models.
We have recently used StressCheck® to obtain improved stress intensity factor solutions (Improved stress intensity factors for selected configurations in cracked plates and Improved stress intensity factors for a single corner crack at a loaded fastener hole) for five key generic configurations. These transferable parametric results have been published externally. One specific example is the non-linear contact analysis of a cracked, filled fastener hole, with both fastener and remote plate loading.”
Dr. Manfred Heller, HeadStructural & Damage Mechanics, DST Group