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Found 9 results

  1. i am trying to simulate shear failure in bolt in which head of bolt tears off due to shear load. I've used type 13 spring along with a local co-ordinate system and pre-tension curve . What is the best way to capture shear load failure. and what is the best way to apply pretension type 32 or type 13 spring. Should washers be modeled as rigid.?
  2. Dear all, Lately I am having some problems solving a problem that might seem "trivial", however I am still having problems getting some meaningful results. As seen from the files attached, the problem consists of two aluminium plates connected with a steel bolt and a bushing. There is a press fit of 0,2mm (if I remember well) between the bushing and the two plates. The upper plate has one of its sides fixed and a compressive force of 90 kN is acted on the lower plate. Although I have simulated the contact* between all components (plates, bolt, bushing) and ran a quassi static NL analysis, I keep getting extremely high stresses at the area seen on the attached picture. It is probably some mistake with the contact there but I cannot find it. Please have a look on the attached .hm file. There are no contacts defined to allow you to use your own approach to the problem. You can use any of the latest HM versions to setup the problem. Thank you in advance for your kind assistance. *: a number of approaches used: friction, no friction, slide, freeze etc. bolt_coupon.hm
  3. 指定した直系以下の穴を見つけて、穴同士のペアが指定距離以内であれば、そこにボルトコネクター(締結ペアと位置情報)を作ることができます。 ※HyperWorksDesktop2017.2.3以上のアップデートが必要です。 手順は、下記ビデオをご確認下さい。 HoleDetection.mp4
  4. Hello, i am actually working on a model in which i want to connect two solids with a bolt. Can anyone explain me what is the difference between the different types available. I think i have to use the type = hinge because ist seems like this type represents a rotatin bolt. If someone got a list or so what showing the diffeences it would be very helpfull to me. Tank you. Jonas
  5. Hi, Which element do you use usually for bolts instead of rigid? What properties and materials should i use for bolts? Thanks in advance.
  6. Hi all, Is there any way to model bolts apart from rigid to measure forces on bolt? Could you please share a model or video ? Thanks
  7. Hi there, I'm currently working on a bolt model for blast simulations on bolted plates. The model is quite simple rigid spiders(RB2) at the head and nut end and a spring element in between. The spring is pretensionned using a type 32 property (/PROP/TYPE32 (SPR_PRE)). I'd like to represent the spring failure based on positive rupture displacement but the property doesn't include this unlike /PROP/TYPE4 (SPRING). I'm having trouble finding how to include this criterion in the TYPE32 (SPR_PRE) property. Despite some time spend on tutorials and looking in the theory manual I didn't find what I was looking for. So my question is the following : How can i both include a pretension in the spring and apply a failure criterion ? Best regards,
  8. Hello, I am using 3D tet elements to model a variety of bolted flange plates. I would like to use simplified 1D beam elements as bolts, with RBE2 to connect to each part. Is there a way to use the connector panel to help make this easier? I cannot seem to figure out how to do it for 3D meshes. Also, I have not actually meshed the holes as I am trying to reduce geometric complexity - I have just included a circular "washer" surface for the RBE2 elements to grab on to. My solver is Optistruct. Thank you, Justin
  9. Hi, I am trying to load a bolted structural model and assign pre-tension to the bolt. I have made a spring element connected between two solid parts of bolt. I can see that pretension can be assigned using spring 13 property and also type 32 spring property. In type 32, what so we mean by Stif0 value? Also how to assign pre-tension using both? Thank you
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