# Search the Community

Showing results for tags 'non linear quasi-static analysis'.

• ### Search By Tags

Type tags separated by commas.

### Forums

• Altair Support Forum
• Welcome to Altair Support Forum
• Installation , Licensing and Altair One
• Modeling & Visualisation
• Solvers & Optimization
• Multi Body Simulation
• Conceptual design and Industrial design
• Model-Based Development
• Manufacturing Simulation
• CAE Process Automation
• APA - Composites
• APA - CFD & Thermal
• APA - Vehicle Dynamics
• APA - Manufacturing
• APA - Crash and Safety
• APA - Noise, Vibration and Harshness
• APA - System Level Design
• APA - Structural and Fatigue
• APA - Marine
• APA - Optical Design
• Japanユーザーフォーラム
• ユーザーフォーラムへようこそ
• Altair製品の意外な活用例
• インストール / ライセンス / Altair One / その他
• モデリング（プリプロセッシング）
• シミュレーション技術（ソルバー）
• データ可視化（ポストプロセッシング）
• モデルベース開発
• コンセプト設計と工業デザイン
• 製造シミュレーション
• CAE プロセスの自動化
• エンタープライズソリューション
• データアナリティクス
• 学生向け無償版(Altair Student Edition)

• 0 Replies

• 0 Reviews

Found 1 result

1. ## Non linear quasi-static analysis using gap elements

Hi all, I was running a model in Optistruct 13.0 dealing with a two step non linear quasi-static analysis of two plates coming into contact. In the first step my goal is to make sure the two plates don't come into contact; let's say my initial gap is 5 mm, one plate is pushed down by a force of 100 N, the other one is fixed at the base. At the end of this step the two plates should have minimum gap between them, in other words no load should be transferred from one to another. After the second step in which I apply a force of 1000 N, the two plates obviously come into contact, resulting in a load transfer to the spcf applied at the base of the fixed plate, since friction between the plates is activated. I tried using a gap element in order to simulate the problem but no matter how I change the values into the pgap card (for example I first put a value of Kb equal to 25 N/mm to make sure the pushed plate didn't reach 5 mm of displacement with a force of 100 N.... didn't work, then I put it equal to 0 and I obtained the same result ), at the end of the first step the gap of 5 mm is always reached, resulting in load transfer. How can I avoid this situation in order to make it work properly? I'll attach the .hm file so you can check it. Thanks for any replies, hope someone will help me with this matter! model_with_gap.hm
×
×
• Create New...