patran

Good morning. I have been struggling with a pattern for several days that I can't achieve. I have already developed the model with the czm technique (cohesive zone modeling) and now I am trying with the vcct (virtual crack closure technique) in patran nastran, always using the sol400. I have to...

hi to everyone, from a few days I've been trying to solve a problem using patran-nastran but I don't understand how to do it. the problem is just this: strength ratio in a random patran-nastran analysis. are at the basic level therefore I ask you forgiveness for any banality. I did a random...

Hello everyone, I'm a new member. I am an aerospace engineering student, and I am struggling with a project with nastran patran. Unfortunately I have been stuck for a long time because of continuous software errors. I'll explain better. I often perform an analysis, find results, and at the next...

Hello, everyone. I wish to submit to the audience of users of patran present on the forum the solution I adopted for a problem that I found myself facing: verification of the tension state of a steel wheel consisting of an external ring, hot calettato (shrink fitted) on the wheel centre. the...

Bye to all, for a project to the unit I have to realize a wing cassone and do analysis on the sigma along the direction of wings opening. I would point out that coming from a three-year industrial ing where a lot of theory was made is the first time I find myself using patran and despite...

Good morning, in my exploration of patran-nastran I am trying to solve a problem that seems complex, I wanted to ask if someone can help me and understand if this problem is solved. I am trying to shape a bullet that pierces an aluminum plate; I used a sol400 and set an elasto-plastic material...

Good morning to all, it is the first time I write in this forum so I introduce myself. I am a student at the last year of aerospace engineering and after following a course on solidworks I am following a course on patran-nastran. I modeled a frame consisting of a c beam and a pipe made of...

Hello everyone, I did an analysis with patran, setting only a thermal load on my model. the analysis goes well and I have the measures related to the deformation of the structure under the heat load. I would like to start from this data and then start a structural analysis in which I go to put...

Hello I have a problem that I can't solve I have tried in many ways, I give you help kindly because I don't know what to try anymore. the problem and banal, I have two audiences one from 3mm and one from 2mm. are attacked by two bolt m5 8.8 nominal preload 6500n. I have to apply the preload. I...

Good evening to all and here I am again here to ted you. . I have to conduct an analysis of structures subjected to shock loads..I enclose in the following the performance of inertial forces according to the frequencies (blue line). we are talking about dynamic analysis.. but what exactly? It's...

Hello, everyone. This is my first discussion on the forum. I am an aerospace engineering student and in this semester I am carrying out my three-year thesis on the buckling of cylinders in composite material with the use of fem analysis (patran and nastran). I chose to do this kind of thesis...

hello to all:) are struggling with structural analysis on a convergent-divergent conduit. Can someone suggest me how to apply a variable pressure inside it, knowing only the values at the entrance, in the throat section and at the exit? Do you recommend using lbc fileds? thanks to alliiii:)

hello to all:) I have here a new question that I hope to be able to solve with you. I have a 2d component to simulate with patran. I impose my constraints but, in the analysis phase, nastran sends me the following error: user fatal message 9050 (subdmap sekrrs) run finishedd two to overdo pivot...

Hello everyone, I write to ask you advice on a problem that worries me for a few days: I am working on the design of a tactile sensor consisting of a silicone interface prepared for object manipulation. the problem is as follows: Before intervening with the practical sensorization of the...

Dear users of the forum, I am modeling in patran a welded and bolted structure (elements 2d shell). the bolted links model them using cbar elements that connect the independent nodes of mpc elements. I made a bdf of the model, just to evaluate the number of knots so far produced and I realized...

hello to all:) are new in this forum. I'm approaching the patran/nastran program because of the thesis in engineering. Since they are at the very first weapons, can someone kindly explain to me what is the conceptual setting that is at the base of these software? How should I proceed to realize...

Good evening to all As a regulation I presented myself in the special section, I am faced with the following problem: I have to do a modal analysis on a clutch group. I have complete axieme on solidworks 15 pieces. I choose patran for the fea. My questions are: 1) Can I import the aid or are...

Guys, I take advantage of it to report you a problem in which I have come across recently after updating to version 2012.1 of patran. as you will have noticed who already has it, this version has a somewhat annoying bug: the command shows/hides mpc does not work, forcing to work without being...

hello to all, in the use of patran 2010 the impossibility of creating results files. and this is the message that trains me: [Bleep user fatal message 3060 (sca service loader) - authorization error... unable to obtain licenses for sca.mdsolver.system.printserver please refer to the log file...

Bye to all, I wanted to ask why, when I apply the beam property to a curve, you do not see the 3d representation of the beam, as it happens in some tutorials I have seen. Do I have to set up some options in particular? Moreover I do not have clearly how to orient the beam (for example for a...