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Here is a view of the part. I want to finish the Ø2.438 hole and have it on size when it comes back from heat treating. This is S7 material that will be 48-52 Rc. I will have to find out exactly how the heat treater does the temper. Thanks...

When I have my parts heat treated, they always come back either undersized or oversized. Is there something that will tell me how much the dimensions will change. If I had something that would tell how much per inch of length that would be great. I am mostly concerned with S7 material. Would...

Interesting site. Thanks

This is not a bolt. It was never under any preload. The threaded portion on the end was to secure tooling to the end of this (a punch). This part is made from tool steel, heat treated and then drawn down to 50 to 55 Rc.

I need it to withstand 130ksi. With the heat treatment, S(y)= 200ksi to 230ksi. Without the heat treatment,it would would be less than 100ksi.

I got the broken part back from our customer today. This part was on a new 125ton press that has only been in service for a couple weeks. The part was supposed to be heat treated to 50Rc. Somehow this part got past our QC dept without being heat treated. Since it was not heat treated, it...

Yes. The shaft is threaded Ø1 9/16-12UN. This shaft is the working end of a punch ram where the tooling is connected. Under "normal" conditions, the shaft would only see axial compression loading.

Here is a larger pic. Hopefully it will come thru. Thanks

Would anyone want to list their best guess as to why this shaft failed? Shear, tension or compression? Was it a cyclic load or an abrupt failure? What can you tell from just this picture? Thanks

On page 8.1-2, Beam #5, there is a 5Da and 5Db shown in the chart. I can find 5B, 5C, and 5E on page 8.1-18. Can anyone tell me where to find 5Da or 5Db?

"It is critical to know how the tank is supported. If the tank is supported on the short ends, or hung from the holes in the sides, there will be significant changes to the analysis." The tank rests on the floor. The holes are access and drain holes.

aggman, I got the books in over the holidays. I started by working throught my problem using problem 1, page 6.5-1 as a guide. The first thing that I ran into was that my a/b=40/444=.09. This is off the chart in Table 1,4D. From this chart, if the length is more than twice the height...

JAE, "In these examples, the stiffener determination is not shown. What you have to do is determine the reaction at the top of the plate (the little arrow reaction symbol shown in condition 4C, Table 1). This would be a uniform load of X lbs/ft. This then would be a simple beam design...

JAE, "So I think that his formula on page 8.1-8 is incorrect and should be .0652 - not .00652." I thought that it should have been .00652 because he has the same equation for ?(max) on page 6.4-2, figure 3, condition B and on page 8.1-8. Also, in the formula for condition 3Da on page 8.1-7...

Thanks Drej, That is what I thought too. Going to the next example, "Considering Plate Section as a Beam", Blodgett calculates the maximum deflection on page 6.5-5 except for the (12) in the numerator and the (.5)^3 in the denominator of the calculation. Are these two values part of the...

I have just got a copy of this book and have a question that I hope someone can help me with. I am trying to design a water tank. I think that I need a stiffener around the top. On page 6.5-2 of this book, Blodgett shows an example "Tank with top edge stiffener". Nowhere in the formulas is...

aggman, Thanks for the suggestion. I read his column in Welding Design and Fabrication every month. I just ordered both the Design of Welded Structures and Design of Weldments. Got both of them new for about $45. Can't wait to get them now. Thanks

>Another simplification that may help- treat the sides as >vertical slats, design them as simply supported beams then >design the top stiffener to carry the reactions from the >top. The flat-plate equations approach this approximation >as the width becomes much larger than the height. How do I...

Julian Hardy, Thanks for your answer. As you assumed, the water level will be 40in deep. I felt the deflection would be high, so I added a 4inx4inx1/4 wall square tube around the top. How much will this "Rim Beam" reduce the stress and deflection in the side plates? From what I calculated...

I have an open top,rectangular water container. It is constructed with a bottom and four sides. The containter is 40" deep x 110" wide x 440" long. The walls are 1/4" thick. I need to know how to figure what the deflection will be on the sides of the tank. Thanks