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Student Edition License problem
Hello Altair Team support, My Altair One account only shows the Workspace interface (Marketplace, Drive, HPC).I cannot access the Software Portal (Products → HyperWorks → Get License). As a result, I cannot activate the HyperWorks Student Edition license and OptiStructFEA_Student does not appear in Managed Licensing. Could…
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How to use your Student Edition License
Please, is there someone who can help me with a license issue? This is my first time installing HyperWorks products. I followed the recommended steps: I downloaded hwDesktop2025.1_win64.exe and installed it, then activated the license using the activation key generated on my Altair One account. I downloaded…
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Sine on Random optistruct
Hello everyone, I need to perform Sine on Random analysis for that i need a random subcase and a sine subcase, I performed a MFRA for Random vibrations and called that for Random analysis using RANDPS. I used 1 FATLOAD to call random subcase( analysis type = RANDOM, Random: RANDPS), another FATLOAD to call sine subcase(…
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HyperLifeで疲労強度検討をして航空機の認証（解析での妥当性証明）に使えますか？
Description: プロペラの構造物のハブの疲労強度 遠心力がフライト中かかっている。 空力荷重や振動がかかる。 これらの線形性解析結果ー応力と、それぞれの荷重履歴をインプットすればすべて考慮された疲労強度の解析結果は出ると思います。 これは、解析を基にした強度計算として認証向けに使えますでしょうか？ 認証活動としては最終的に実験検証で妥当性を証明することになりますが。強度計算書に使えるでしょうか？ 解析設定の妥当性は私の方で証明しなければいけませんが、HyperLifeはいかがでしょうか？ 実績がございますでしょうか？ Product/Topic Name : HyperLife、航空機構造、疲労強度 *Note from…
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load evaluation in hyperlife
IN Multi axial fatigue life calculation, I have a constant load on Z axis at a different node and the Y direction load is changing from zero to 23000 in 0-5 s and constant till 55 s and 23000 to 0 in 55-60s at a different node and the cycle continues, how do the Hyperlife evaluate this loading at different points because I…
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random vibration PSD moments calculation?
Hii everyone, I tried hand calculations of PSD moments for damage calculation and want to compare the hyperlife tool results. I exported PSD stress vs Freq plot for an element. I used statistics in hypergraph it gave the area under curve as 5201.201 which is essentially M0. using the rectangualr integration formula given…
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Hyperlife weld certification results import error
Hello all, I'm getting this error lately in HyperLife for weld certification. For this specific file when I try load the Model and Results file in hyperlife weld certification, I am getting this error called " Result Import has experienced an issue - aborting process " and in the status bar I can see this " *set value :…
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Stress range visulation
Hi everyone, I want to calculate stress range in fatigue load cases. Fatigue is a cyclic stress and we have 3 layers i.e., Z1, mid and Z2. When I use range in envelope of LC1 and LC2, where LC1 and LC2 are stress cycle, the value get is range = max(Z1, mid, Z2)-min(Z1, mid, Z2). But what I want is Range 1 = max(Z1 of LC1,…
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Random Response Fatigue Analysis Damage co-relation
Hii everyone, I'm try to co-relate the damage evaluation given by hyperlife tool with hand calculations, I computed Random Response fatigue analysis, imported into hyperlife tool, I'm using stress combination Vonmisses, Mean stress Goodman,Layer worst, Type of loading Random (PSD Stress) Damage model THREE, I have assigned…
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How to calculate damage in Hyperlife as per IEC 61373
Hello, I want to calc damage in model as per IEC 61373 with Random Response Analysis in Hyperlife , the specification doesn't show IEC 61373.
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Definition of “Number of Sweeps” in HyperLife Frequency-Domain Sine Sweep Fatigue (v2026)
In HyperLife v2026, for frequency-domain sine sweep fatigue using FRF results (Vibration → Frequency Domain, Sine), how is “Number of Sweeps” defined internally? Specifically: Does 1 sweep correspond to a single-direction sweep (Start → End frequency), or Does 1 sweep correspond to a full cycle (Start → End → Start)? In…
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residual stress in Hyperlife
How to include residual stress in Hyperlife?
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Hyperlife not showing results
The loads are correct, The analysis on Hyperview shows accurate results. but when i go to hyperlife to see the fatigue effects, it doesn't show any results. i've tried: changing the folder paths; creating a global output request on hypermesh to give outputs on strain and stress; putting the scale number on hyperlife to…
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Analysis and Optimization of an automotive cradle using single finite element model with multiple at
Nafems Presentation on Finite element analysis has been an important part of vehicle product design. Currently in the industry multiple models of same components/assemblies are built to perform different analyses for example NVH, non-linear strength (permanent set) and fatigue. Most of the times multiple solvers are used…
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Hyper life tutorial Model
I need to download the hyper life tutorial models. From where to down load it. Please let me know.
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Stress gradient in Hyperlife 2025
Dear Hyperlife users, I want to try out the stress gradient feature in an EN-analyses. The issue is that my cumputers runs for hours without any results. Are the any limitations for the size of the model or the number of analyzed elements? How is your experience with the stress gradient approach? Best regards, Robert
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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?