Informative!👍

Where did you find the data for the 1st slide? (7 seconds in)

@PDWCreative

3 жыл бұрын

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

3 жыл бұрын

This is the way I was taught to arrange the equation. Its not a mistake

@SanTen11

3 жыл бұрын

@@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?

@PDWCreative

3 жыл бұрын

@@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

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

@PDWCreative

Жыл бұрын

b needs to be negative before calculating. Try the exact calculation in the video before altering anything to ensure you are aligned

@srinivasanv6573

Жыл бұрын

@@PDWCreative thanks you sir after removing - symbol from b value comes correct thank you for that

@srinivasanv6573

Жыл бұрын

@@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..

@PDWCreative

Жыл бұрын

@@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.

@srinivasanv6573

Жыл бұрын

@@PDWCreative thanks sir

The use of 'k' has an error.

@PDWCreative

11 ай бұрын

Can you tell me the error? There are lots of different forms of K as mentioned in the video

@user-ur9dc6rr1h

11 ай бұрын

@@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.