Am i right in saying that the shear stress is perpendicular to tension/compression stress. Like in this case the force F generating shear movement lies in the plane of the Area A. Force vector is perpendicular to area vector unlike in normal stresses like tension and compression where the force vector is parallel to area normal vector.
+Suyash Sharma Exactly correct. Any force vector, acting upon an area, can be broken into a component perpendicular and a component parallel to the area. We call the stress generated by these force components direct (tension,compression) and shear stress, respectively.
There is a variation in shear stress in the thickness direction, but not in the circumferential direction. In the case that the thickness is much lower than the diameter, it is a good assumption that the stress is constant in both the thickness direction and the circumferential direction.
For general thin-walled structures, we assume that any variation of shear stress through the thickness is small compared to the variation in the other direction. This allows us to approximate a section of panel as having a constant shear "flow" over a small unit of panel length.
@@AerospaceStructures Your two replies are in conflict: 'There is a variation in shear stress in the thickness direction, but not in the circumferential direction.' vs 'variation of shear stress through the thickness is small compared to the variation in the other direction' Actually I don't get it 'but not in the circumferential direction.'
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That 'sigh' at the beginning is gold...my profs for every mechanics class I've had does the same thing the beginning of a new lesson
Proud to be a subscriber of exergic channel ...even I am from civil engineering background...I am always eager to watch ur lectures 🙏🙏
Thank you sir..
Shortly & perfectly explained the concept
This is 10 times better than our teacher
thanks for this video, helped a lot
Am i right in saying that the shear stress is perpendicular to tension/compression stress.
Like in this case the force F generating shear movement lies in the plane of the Area A.
Force vector is perpendicular to area vector unlike in normal stresses like tension and compression where the force vector is parallel to area normal vector.
+Suyash Sharma Exactly correct. Any force vector, acting upon an area, can be broken into a component perpendicular and a component parallel to the area. We call the stress generated by these force components direct (tension,compression) and shear stress, respectively.
Thank you sir
Sorry, u said that the shear stress do vary across circumference.... i dont think it does
There is a variation in shear stress in the thickness direction, but not in the circumferential direction. In the case that the thickness is much lower than the diameter, it is a good assumption that the stress is constant in both the thickness direction and the circumferential direction.
For general thin-walled structures, we assume that any variation of shear stress through the thickness is small compared to the variation in the other direction. This allows us to approximate a section of panel as having a constant shear "flow" over a small unit of panel length.
@@AerospaceStructures Your two replies are in conflict: 'There is a variation in shear stress in the thickness direction, but not in the circumferential direction.' vs 'variation of shear stress through the thickness is small compared to the variation in the other direction' Actually I don't get it 'but not in the circumferential direction.'
Sounds like he is sleeping
I am curious what U used to present this? A drawing tablet like a Wacom?
MS Surface Pro 2. Preloaded the images into OneNote (Modern UI version) and captured the voice and annotations using screen capture software.
Aerospace Structures @ UNSW Thanks for reporting. It looks very nice this way.
Thank you
Horrible