2012年11月21日 · Incidentally you do not need a Mohr circle for the stress state indicated. If σ y = 0 then Von Mises can be written [tex]Y = \sqrt {\sigma _x^2 + 3\tau _{xy}^2} [/tex] as an alternative to the formula using σ 1 and σ 2 So I would be interested if you have a reference or could post more of this book.

2015年1月15日 · The von Mises criterion just uses the principal stresses to compute an equivalent tensile stress in the material so we can do a simple comparison with the tension allowable for the material. Physically, it says that when the stress is up above some critical value, there's enough strain energy in the material to make it yield.

2023年10月7日 · Von Mises predicts triaxial compression/tension should not be problematic. In reality, triaxial tension does break the components. In broad terms, Von Misses is a failure theory that uses deviatoric stress to check if a ductile material will yield.

2013年5月25日 · The formulae being used are the Hoop Stress formula, the Radial Stress formula, and the Von Mises Stress formula. There is uncertainty about whether or not to include axial stress in the calculation of the Von Mises Stress. The individual believes that axial stress should be included but is unsure about the inclusion of radial stress.

2008年1月2日 · In summary, Von Mises stress and maximum principle stress are two different ways of measuring the stress on a material. While maximum principle stress considers the maximum value of stress in a specific direction, Von Mises stress takes into account all three dimensions of stress to determine the overall stress state.

2023年5月17日 · Von Mises stress is a scalar stress value derived from the stress tensor that is used in engineering and materials science to predict yielding of materials under complex loading conditions. It is particularly useful because it allows for the comparison of different states of stress to the material's yield stress, providing a criterion for failure.

2010年9月14日 · Since the pressure in the tank will cause a uniformly distributed load on the wetted surface of the cap, I understand I'm dealing with bending stresses. My plan was to calculate the Von Mises Stress and compare it to the bending strength (or flexural strength), but I can't seem to find that strength property for aluminum 6061 anywhere!

2010年7月9日 · For ductile materials Von Mises is usually used (in school we used this for fatigue) and for brittle materials Principal stresses are normally used. If you think the part will fail when the tensile (or compressive) stress goes above the materials yield stress then you would look at the Principal stresses.

2010年4月20日 · The Von Mises equation simplifies to a single normal stress and a single shear stress, but there is uncertainty about the portion of the shaft beyond where the torque is applied. The question is whether there is still a shear stress in this portion, and if not, the Von Mises and Principal Stress equations simplify to only the single normal stress.

2019年1月13日 · In summary, Von Mises stress is a measure of the stress experienced by a material at a specific point, taking into account both normal and shear stresses. It is calculated using the Von Mises yield criterion equation and is used to determine if a material will deform or fail under a given load.