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Sure Brother

Thanks Brother

The determination of whether a material has exceeded its strength depends not only on the principal stresses but also on the specific failure criteria used. Different failure criteria take into account various factors such as yield strength, ultimate strength, material properties, and the stress state. So while principal stresses are important for understanding the stress distribution within a structure, the ultimate determination of failure typically involves comparing these stresses to the material's strength using appropriate failure criteria.

th-cam.com/video/xkbQnBAOFEg/w-d-xo.htmlsi=4rqgc52Nuoi_DLea

yes brother. we can. plates are there in the element selection options

Brother your question is not clear. can you explain

Brother, this is an empirically used one. What is needed in modeling is how you approximate the real-life conditions (mathematically). If there is a good equation, you can use it.

When the software states that the moments are given "per unit of in-plane length," it means that the reported values are normalized by the length of the element in the plane of interest. In other words, the moments are provided on a per-meter basis along the relevant axis. To obtain the total moment for a specific element, you would indeed need to multiply the reported value (m11 or m22) by the length of the element along the axis of interest. If you need output at the middle, simply you can define a node at the middle. These are finite element packages. They calculate information at the nodes you provide

you are welcome brother🙂

@@Structural_analysis Thanks a lot, you are also always welcome to my channel😇.

I would not disagree. but have a look brother th-cam.com/users/shortsyFuK68u2-hw?si=_hpgmwzgc0BanlFx

plate elements are typically used to analyze structures where the thickness of the plate is much smaller compared to its other dimensions. They capture both the bending and axial deformation of a plate. Shell elements are primarily used to model structures where bending behavior is dominant. They are also two-dimensional elements, but they mainly focus on capturing the flexural response of a structure. Shell elements are not designed to capture axial deformations, and their usage is appropriate when the primary deformation mode is bending. If you want a simplified analysis and your culvert structure has relatively small deformations and is not subjected to complex loadings, you can model the top and bottom slabs as thin plate elements. If you require a more detailed and accurate analysis, especially when dealing with thicker slabs or complex loading conditions, you may choose to model the top and bottom slabs as shell elements. Shell elements are better at capturing the behavior of structures with more significant deformations and varying thicknesses. Here i have done an analysis of box culvert(using shells): th-cam.com/video/XUeALSXx78s/w-d-xo.html Hope i answered your question :)

thank youu

Genarally, in the tabs, you can define a cut line and see results/ That option is avialab;e

if you want to model the soil, soil is usually modelled as a spring.. because it has a stifness and it settle.. other hypothetical supports like pin, fix and roller do not settle in vertical direction unless we allow it manually.. so if you want to model soil, you may use spring.. (if you see my box culvert video thats there). if you dont need to model the soil, go with pin or fixed.. if you dont need to transfer moments to foundation you may use a pin support.. else use a fix support

@@Structural_analysis I have added concrete footing and springs bellow to emulate the soil. But i don't know how to connect(link) the footing to the shell structure.

@@admirpasic4988 use a column (line element)

"Display" tab in the SAP2000 toolbar and click on "Show Tables." In the "Show Tables" dialog box, select the "Frame/Line" option. In the frame/line tables, you can view various results, including bending moments. Locate the table that displays bending moments for solid elements. The table is typically labeled as "Internal Forces" or "Bending Moments." should be there.. but i havent used brother

@@Structural_analysis Thank you but there is no "Frame/Line" option bro. Can we talk with you on Zoom or discord?

​@@bahabaturay9404 as far as I can remember, DISPLAY/SHOW TABLES/ANALYSIS/ELEMENT OUTPUT/TABLE:FORCES. Go to FILE option of the generated output. Then EXPORT CURRENT FILE-TO EXCEL

the thickness of the wall of box culvert is 1m????

@@Structural_analysis yes. the thickness is 1m. it will be used as and underpass and the top of the box section is for the taxiway for airplanes.

culvert with a 1m wall thickness, instead of using shell elements, you would typically use solid elements to represent the thick section of the culvert. Solid elements in SAP2000 are three-dimensional elements that can accurately capture the behavior of solid structures. They are suitable for modeling thick-walled or solid sections, such as the walls of a box culvert

@@Structural_analysis Thanks for the answer. I tried to draw it by using grid. I will try with solid. Have a nice day.

i think i started it from scratch, didnt I? which part is not clear to you brother

why you have taken area load on all the small plate element separately. Why not forming a complete culvert with four Plate?

@@user-ed6gx6zi1f that is possible. as i remember i applied a unit pressure to a small element. then copy that element to everwhere.. if you use it as a unit load.., you can just use a factor in the combinations to adjust as you want.. on the other hand, if i drsw the whole culvert, then i need to mesh it and apply loading accordingly.. what you mentioned is also correct.. when you model a building, apply a unit load will save your time. because you can define live load, services and all the stuff as a factor of that in the combination section

@@user-ed6gx6zi1f did i answer your question or still not??

how did you begin to built this geometry? Under which section (eg. Walls, underground concrete structure, frames etc.) ? So that I can apply area loads in the structure.

The output of this analysis typically includes the displacement and acceleration spectra for each mode of vibration. In SAP2000, you can obtain the maximum stresses for each mode by selecting the "Modal" option in the "Output Case" dialog box and selecting "Maximum" for the "Stress" output option. To visualize the stress area, you can use a variety of tools available in SAP2000 or other software packages. One common way to do this is to create a color contour plot of the stresses over the structure. This can be done by selecting the "Display Options" tab in the "Display Settings" dialog box and choosing the "Contour Color" option. You can then select the appropriate stress component (e.g., axial, bending, shear) and specify the contour intervals and color scheme.

This covers the modelling from zero to the end... may i know which part you need??? (Any specific topic)

Thanks for responding , I need the next part how to analyze this module

th-cam.com/video/hU9bo09Pozo/w-d-xo.html

I will put a video soon

You can calculate the wind force per a floor.. and apply it as a line load (udl) to the floor (edge of the floor) in the correct direction or take that load per floor as single point load and apply it to the mid point (edge of the floor). Both methods are okay since the force will go throuhh the centre of gravity. I only meant only the along wind.. you have to do it for the leeward side also. And because of the along wind you can calculate induced crosswind force in the perpendicular direction also.. (im referring to AS/NZS 1170.2 2011). All these happens because of te wind flow in x direction. Later you can model the wind in y direction also similar to this

@@Structural_analysis Thank you for your kindness

@@Structural_analysis I calculated the forces per pavement, however, I haven’t been able to insert the SAP’s model. By defining the wind weight, I found an option that can be defined by the user. Then, I used a table where apparently I add the forces. However, there’s some data that I need to add, and I’m not really understanding.

@@ilkasilva7489 i hope you are talking about automatic wind load assign.. that is done according to a design standard.. there, you need to know some of unique parameters which are defined wthin the standard

hi do you need the model or ???

For the combination. Make the envelope.. as i remember, Sap 2000 shows minimum and maximum for the envelope

@@Structural_analysis correct, but it is showing the min/max for the entire structure when I just want to see the min/max displayed for the base mat

Yeah.. i havent also seen such.. i will check the manual and let you know

@@Structural_analysis thanks! It's just frustrating because it is showing a maximum moment of 42 kips which occurs on the wall, and I'm designing the base mat

Havent used design option for a while..but as i remember, yes you can take it.. but not as an output.. its is mentioned in the detailed calculation

Yes.. you are asking a general question right?.. in that case you are correct If {f}= [k]{d} 1/|k| x [k]-1 x {f} = {d}

I think It’s reading the average from that node that’s why I’m getting different values.

@@johnreealimorong4586 you may have done some mistake while reading the output.. did you check it again?

You are welcome brother

I havent come across such different expalantion. If it is i will update it for sure. For example, shell output consist of these options only.

but i will try to upload it soon brother ❤

Sure i will soon

@@Structural_analysis and please Video in English for better understanding !!

You are welcome 😍😍

You are welcome 😊

Thank you brother 😍

Thank you brother

I hope that codes might have defined such equation by now. But I had not seen any since i did not refer those recently.. those are usually calculated using soil properties.. However, this equation is generally used in practice, for modeling also.. its an empirical equation.. if i found, i will update it soon brother

Thank you brother ,😍