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HyperLife Import File Units
Hello, I can't figure out why my HyperLife model is showing a damage above 1 (and therefore <1 cycle of lifetime). I am importing a nastran file, the stress in HyperLife shows 1.06e4, while the NX result is 106 MPa. I thought this could be the problem, but scaling the force by 1/1000 results in no stress at all. Does…
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Modal Transient & Superposition Fatigue Setup - SPCD, TLOAD, DLOAD
I'm running two simulations: (1) Modal transient fatigue in OptiStruct and (2) Modal superposition fatigue using OptiStruct + HyperLife/nCode. Loading consists of four Z-axis acceleration time histories applied at front and rear suspension mounting plates (two each) using SPCD (DOF3 = 9810). I’ve defined 4 SPCDs, 4 SPCs…
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How to assign mean stresses in Altair Hyperlife
Greetings to all, I recently started using Altair Hyperlife. I want to do a SN fatigue life analysis using load cases paired with constant amplitude channels, using uniaxial method. I have a streel structure that is welded. My model is 2D shell elements with CBUSH connections for welds. So how do I want to set it up: I…
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Getting Started with HyperLife v2023.1
Hi. I completed the Getting Started with HyperLife v2023.1 coarse and recieved a certificatge. But the name on the certificate is ???????????. I think thats why because my name is in Greek because i've registered from my academic mail. PLease tell me how to change that and if i attent more coarses, it would be the same…
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For Altair's Learning Center (LMS) related questions
I am trying to correlate experimental setup which is Acceleration : 3.3m/s2, Displacement = +/-25 mm and frequency 2.7 Hz in x direction, Also required cycle for fatigue analysis, 66109 cycles (Pause 300s for every 500 cycles)and Stimulate it to FEA, Please can i have a sample deck. Or to set the deck for this in FRF…
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HyperLife 2025 Crack Growth Analysis
I have observed that a new module, "Crack Growth Analysis," has been introduced in HyperLife 2025. However, I have several questions regarding the load map data. Firstly, is it possible to import stress data instead of load data? Secondly, what is the recommended mesh size for conducting crack growth analysis?
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How to obtain the ZERO POSITIVE CROSSING to perform a FATIGUE Analysis
Hi, I need to obtain the Zero Positive Crossing to perform a fatigue Analysis. I find something online but it isn't clear. https://2021.help.altair.com/2021/hwsolvers/os/topics/solvers/os/analysis_random_response_r.htm In particular, I didn't understand in which element I need to see these value. Thank you
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[Hyperlife]I can't find stress result
I import d3plot file but I can't find stress result Ls-dyna created 3 d3plot(d3plot, d3plot01, d3plot02) I import 3dplot file only What am I misunderstanding?
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[Hyperlife]I can't find stress result
I tried import d3plot file. but I cannot find stress result Ls-Dyna created 3 d3plot file(ex. d3plot, d3plot01, d3plot02) I import d3plot file What am I misunderstanding?
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Hyperlife materials definition
Hi everybody, When you have some data for an SN curve (or EN curve), theses curves are define for a survival probability (50%, 90% or 95% …). It seems that you can't define this probability in the material definition. So i assume that to perform a calculation at P=95%, you have 2 solutions : material data at P=95% and Std…
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HyperLife error
When I run analysis, it is displayed error. The error displays "Failed to attach results. " and "Error opening: The current user may not have permissions to open this file ". Why is it displayed this error? I want to be solved this problem.
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HyperLife Weld Certification - Weld Template Creation
https://us.v-cdn.net/6038102/uploads/RM7OUBK3ISM6/dvs1612-template.xml https://us.v-cdn.net/6038102/uploads/YCEPMK46ZE3I/ec3-template.xml https://us.v-cdn.net/6038102/uploads/YUN3FJGV5E9R/dvs1612-template-butt-weld.xml In Weld Certification, when dealing with multiple weld lines that require different weld parameters, it…
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Eingabe Channels bei Multi-Axialer-Analyse
Hallo, die Channel data files (*.rsp) werden nicht in der GUI "Load Map" gespeichert, obwohl sie vorher zusammen mit den Lastfällen augewählt worden sind. Schließt man die GUI "Load Map" und öffnet diese wieder, sind die Channel Input files verschwunden. Was kann der Grund dafür sein? Mit freundlichen Grüßen, Christian…
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Open results in HyperLife
Hi all expert, After running my analysis, I have a results file that looks like the image below. How can I view the results with HyperLife? Should it be a .hlf file? I keep experiencing crashes every time I import the .hlf file into HyperLife. Thanks all.
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Surface treatment shopeened and cold worked why?
In the material properties tab of hyperlife, there is the possibility to select 3 surface treatments (Nitrided, shotpeened, coldworked) Nitrided applies a correction factor of 2 while shotpeening and coldworks don't apply any correction factor. My question is: Why there is the option of apply shotppening or coldwork when…
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Hyperlife and tcl scripts
In Hyperlife, is there any possibility to see the command file as in Hypermesh, or view previous tasks performed in the HWC window as in Hyperview? I would like to create a TCL script for a fatigue load case. The tasks I perform are always the same: assigning the corresponding material to each part and creating a load map…
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Single Sine Tone Fatigue from FRF Analysis
The article below demonstrates three methods for a Single Sine Tone Fatigue Analysis based on FRF Analysis, implementing Sine-Sweep, Steady State (Steady) and Multiple Sine Tones (HARMO) approaches. As an example, to analyze these methods, we will calculate the fatigue damage on a plate model, where we will enforce a…
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mrfにフィルター処理を行いpch形式で出力するスクリプト
Overview 本記事では、弾性体を含むMotionSolveの解析結果のmrfに対し、ローパスフィルタ処理を行いpch形式で出力するスクリプトを紹介します。 疲労解析のHyperLifeでは、弾性体を含むMotionSolveの解析結果のモード情報を用いて高速に疲労評価を行うことができます。 本スクリプトでは、モード変位に対し、事前にローパスフィルタ処理を行うことで、見たい周波数帯のみの振動を考慮した疲労解析が可能となります。 Pre-Requisite MotionSolveとHyperLifeを用いた機構解析は下記よりテキスト、モデルがダウンロード可能です。本記事でもこのモデルを使用します。 機構解析から始める疲労解析…
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Do you want to learn more about "HyperLife for Weld Fatigue Analysis"? There is dedicated training!
Hi all, We have a new Instructor Led Training offering about “HyperLife for Weld Fatigue Analysis”. For more comprehensive information about “HyperLife for Weld Fatigue Analysis”, please visit the Altair Learn site (https://learn.altair.com/) under Class Schedule to check for scheduled sessions and register if you are…
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Do you want to learn more about "HyperLife for Fatigue Analysis"? There is dedicated training!
Hi all, We have a new Instructor Led Training offering about “HyperLife for Fatigue Analysis”. For more comprehensive information about “HyperLife for Fatigue Analysis”, please visit the Altair Learn site (https://learn.altair.com/) under Class Schedule to check for scheduled sessions and register if you are interested.…
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Fatigue analysis results interpretation
Olá, sou de uma equipe de competição baja e estamos com algumas duvidas quanto à analise de fadiga do software HyperLife. Alguns pontos são: - Como funciona a falha por fadiga analisada? O software interpreta a falha / tempo de vida / dano acumulado de cada um dos elementos, certo? - Segue um caso experimentado, onde…
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Life and damage contradiction - Hyperlife fatigue
Hello, I was performing Random response fatigue analysis with PSD data (1 direction). First 1G base excitation was done in Optistruct to get the Transfer function (Modal based FRF in 1 direction). The H3D FRF results and PSD (Exposure time of 1 hour) were given as an event. Stress life approach was chosen. The problem got…
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Impact fatigue
Hello, I am examining the fatigue that occurs when a thin metal plate hits another metal. I modeled the thin metal plate with shell elements (The shell element properties I use are attached.) and I used M1_Elast metarial card. For simulate this impact motion, I'm making a time-dependent solutions with radioss solver. I…
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機構解析から始める疲労解析
機構解析 (MotionSolve) で部品の応力履歴を取得して、S-N 線図による疲労寿命予測解析 (HyperLife) をする演習書です。 HyperLife と MotionSolve の入門に最適な内容です。 次のバージョンに対応しています。 Simlab 2023, MotionView 2023, HyperLife 2023, OptiStruct 2023, MotionSolve 2023 演習書: 機構解析から始める疲労解析2023_0.0.1.pdf 演習データ: 機構解析から始める疲労解析2023_0.0.1演習データ.7z v2022.3 用のデータ 演習書:…
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Weld fatigue life prediction?
Within my assemblies i need to conduct fatigue life evaluations on both base material and weld lines within HyperLife. My fatigue environment is random vibration in nature therefore I understand I must utilize an FRF model with PSD input approach. I note that because of this i can't use the Volvo method (as a PSD input is…
