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Hello, Can someone please help me in using the minimize function. In the attached file (Mathcad 15), iam getting variable undefined while using the minimize function. Please see the bottom of the attached worksheet for the minimize function(Highlighted in Green). Also, I have a very long...

Hello, can someone point out the mistake in the attached worksheet. I highlighted the mistakes in yeloow(on the right half of worksheet). I have very simple equations but the mathcad is giving me a different answer to that of manual calcualtion.. Also, the mathcad is rounding off 1.953X10^3 to...

Hello, can we redfine a variable that is previously defined. I have a situation where the varialble value need to be modified under certain conditions Fy=35 Fy=2CEt/d if D/t > 60 Fy=XXXx if(XXXXX) Please see the attached file.. Thanks for your...

I strated learning MATHCAD few days back and started first design worksheet as attached. But i couldnt resolve the error: This value has units:Unitless, but must have units:Pressure.. Iam getting the abov eerror in the program. can someone help me to resolve the error.. Thanks

Can someone tell me when we have to use ring stiffeners??. Iam checking the previous projects, where they had used internal ring stiffeners in Cylindrical legs of tubular members for jackups. Does API says anything related to need for ring stiffener?? Is it related to Geometry? Also, if we are...

Hello, Can someone tell me when we should use back gouge weld. Is backgouge CJP weld??. I was thinking the Backgouge to be used when we are butt welding the plates & the thickness is greater than 0.25 inches.. Please clarify.. Also, how we design the welds for connecting plates. I mean to...

Are there any design guidelines for tapered beams. I had a situation where a long cantilever beam made of two different sections. If I want to taper the bigger section to the smaller. Does any code tells about this?? Thanks

Hello, I never studied Dynamic analysis & all my exp is limited to Static Analysis. Recently I switched my job, where I had to work on dynamic analysis too. I know that Dynamic is a complex subject & cannot be mastered in a short span of time. Can someone refer me a refernce material where it...

I need some help understanding the usage of "Wave Loads" in SACS. Iam being provided with only Wave height & Wave period. So, not sure what to input for.. 1. Initial Crest Position 2. Wave position Step size 3. Number of Crest positions.. Is there any standard procedure/thumb rule for those...

Hello, I know that in Dummy structure, we can use only 40 boundary joints. I had a situation where there are more than 40 joints (cylindrical tower) My dummy joint is centre of the cylindrer. So I made four overlapping joints (4 delete joints) & divided the joints of the cylinder in to four...

Hello, This might be a basic question but can anyone tell if there are any guidelines/thumbrules or basic concepts involved in the selection of truss type. I mean to ask the orientation of inclined members, spacing & type of truss. For Example if I had a Cantilever space 2 level truss, is there...

I was thinking if SACS has any Bucklying analysis?? Thanks

Hello, I was trying to use the post processor (redesign) option in SACS for a simple frame. When my model contain tubular members the redesign worked fine but when I changed the members to non tubular it gives me a warning "Member Redesign Failed".. Can anyone explain the reason for those...

Hello, I was trying to use the post processor (redesign) option in SACS for a simple frame. When my model contain tubular members the redesign worked fine but when I changed the members to non tubular it gives me a warning "Member Redesign Failed".. Can anyone explain the reason for those...

i would like to learn Ansys Offshore.. Any recommendations like books or material.. Thanks

I have modelled two plates with similar properties, boundary conditions & loading. And one assigned one plate with plate stiffner and the second plate with beam section (similar to stiffners) as stiffners. But the results for two differnt plates vary a lot. Can anyone help..

Hello, Can anyone explain how to use the weights corretly in SACS. I defined various types of weights on the structure & created load conditions by including weight groups. But when I run the analysis I couldnt see any reations due to these weights. Is weight groups need to be used only with...

Hello, I was trying to compare the results between SACS inbuilt plate stiffner section & using the member section as a stiffner for the plate. The results vary a lot & I need some help understanding the concept.. I had attached the files for reference. For Left half portion of the structure, I...

HELLO, CAN ANYONE SUGGEST ME A GOOD BOOK FOR THE DESIGN OF JACK UP.. OR ANY RELATED INFORMATION OR ARTICLES.. THANKS

Hello All, I had to design a crane pedestal(tower shaped plate structure) on floating vessel. As per API2C, I had to include offload, side load, crane base motion loads e.t.c. I had been provided by the crane manufacturer Max safe working loads (onboard & offboard rating) and also max thrust &...