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I have difficulty accepting the definition of "nominal strength" and "net strength" given in Shigley's Mechanical Engineering Design.
Consider a plate of width w, thickness t, with a hole of diameter d centered at w/2, loaded with force F.
Shigley's says: the "net stress" is \sigma_net=F/(wt) and the "nominal stress" is \sigma_nominal=F/((w-d)t). ==> I think he is wrong!
According to: http://dictionary.reference.com/
Net:
— noun
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Dear all I came up with some stress distributions which exist in a cylindrical specimen in a tensile test. However, I cannot understand how these formulas were gotten. There is a reference to a Bridgman paper (1944). Is there anyone who can give some inputs abouts this?
Thanks in advance
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Hi
all,
I
am an ABAQUS novice working on a graduation project. My model is a
reinforced concrete Tee-joint with steel rebars and stirrups embedded to the
concrete. The concrete is modeled using the Damage-Plasticity model, with
mostly default suggested values. The elastic and plastic values are
derived from experimental values. In addition to the embeddment, the
column and the beam is tied together using the tie command. The model is
subjected to an axial load as well as a displacement force.
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Hello,
I read that "In general, even if the materials on the micro-level are isotropic, the effective
material can show anisotropic behavior. A general anisotropic linear elastic material
may have twenty one independent material parameters.''
If I understand my results correctly then simple structures like ''ball in the unit cell'' result in orthotropic material.
I am a bit puzzled - what would be the simplest structure that would result in anisotropic material behaviour?
Dear all,
Sometimes, we can see the conception of Mandel Stress, I wonder
What is mandel stress? How to use it?
Thanks.
