@@PDWCreative Having difficulty replying with an image. Anyway, the k should be in ( ) with the torsional stress calculation. Answer should be 178.57MPa instead of 171.5MPa.
Various sources. I am aware many stress calculators and manufacturers will give a greater allowance (60%+ depending on the material). But this lesser recommendation is based on springs with a long cycle life.
i have a question and find a mistake. 10:23 mistake >>> N=(Sref/a)1/b is correct. 10:40 mistake too >> N=(S2/a)1/b is correct and question is 8:40 Why are you squaring (1/6-3) here? The term just above doesn't have a square, I'm curious as to why. Using Google Translate, the words may be strange. Please understand.
@@PDWCreative Oh I see. and then 0:09 May I know the reason and standard for the %tensile of Chrome Silicon of 45% in wire stress limit recommendation here?
@@SanTen11 The figures are from researching a few sources for the material reference data. The best thing for you to do next is look at the scenario you are designing for and check whether a higher tensile limit is acceptable. Check 3 or 4 research sources for material data and fatigue calculation. Select the method that works for you
@@PDWCreative dear sir, if I want to good in mechanical calculations what are the things I need to sir, because right now I am working as design engineer in one company so what are things I need to do improve my design and calculation skills...what are the books I need to study..
@@srinivasanv6573 It all depends on what type of industry you are in. Start with basic general engineering books and work from there. This will give you a good foundation. Also look up specific subjects related to your role. After allot of searching, you will end up with 4 or 5 books that work really well for your needs that you'll refer to over and over again.
Informative!👍
The use of 'k' has an error.
Can you tell me the error? There are lots of different forms of K as mentioned in the video
@@PDWCreative Having difficulty replying with an image. Anyway, the k should be in ( ) with the torsional stress calculation. Answer should be 178.57MPa instead of 171.5MPa.
Where did you find the data for the 1st slide? (7 seconds in)
Various sources. I am aware many stress calculators and manufacturers will give a greater allowance (60%+ depending on the material). But this lesser recommendation is based on springs with a long cycle life.
i have a question and find a mistake.
10:23 mistake >>> N=(Sref/a)1/b is correct.
10:40 mistake too >> N=(S2/a)1/b is correct
and question is 8:40 Why are you squaring (1/6-3) here?
The term just above doesn't have a square, I'm curious as to why.
Using Google Translate, the words may be strange. Please understand.
This is the way I was taught to arrange the equation. Its not a mistake
@@PDWCreative Oh I see. and then 0:09 May I know the reason and standard for the %tensile of Chrome Silicon of 45% in wire stress limit recommendation here?
@@SanTen11 The figures are from researching a few sources for the material reference data. The best thing for you to do next is look at the scenario you are designing for and check whether a higher tensile limit is acceptable. Check 3 or 4 research sources for material data and fatigue calculation. Select the method that works for you
Still I don't understand that square term can you please explain.@@PDWCreative
Cycles to failure formula N=b√a/S2. If I put at calculator means value comes at negative -0.2006 comes what is the correct way to calculate this one
b needs to be negative before calculating. Try the exact calculation in the video before altering anything to ensure you are aligned
@@PDWCreative thanks you sir after removing - symbol from b value comes correct thank you for that
@@PDWCreative dear sir, if I want to good in mechanical calculations what are the things I need to sir, because right now I am working as design engineer in one company so what are things I need to do improve my design and calculation skills...what are the books I need to study..
@@srinivasanv6573 It all depends on what type of industry you are in. Start with basic general engineering books and work from there. This will give you a good foundation. Also look up specific subjects related to your role.
After allot of searching, you will end up with 4 or 5 books that work really well for your needs that you'll refer to over and over again.
@@PDWCreative thanks sir