Simulation of Bolt Connections in Accordance with VDI 2230
Analyze multi-bolted connections confidently and quickly
Learn how to correctly perform a systematic strength verification in accordance with VDI Guideline 2230 directly within your simulation environment. This training is offered as a 3-day course or alternatively as a self-paced eLearning course.
Duration
3 days
Prerequisites
Basic knowledge of Ansys Mechanical
Software used
Ansys Mechanical, Bolt Assessment inside Ansys
- Familiarization with the VDI 2230 1/2 verification concept (Guideline available on the CADFEM Learning Center)
- Practicing correct methods of FEM modeling and evaluation of bolts
- Assessment of bolts corresponding to model classes II and III by simple click
- A free 3-month license giving access to “Bolt Assessment inside Ansys”
Description
Engineers dealing with the systematic strength analysis of bolt connections utilize the VDI 2230 guidelines. These guidelines allow for systematic verifications, taking into account the assembly situation, static and dynamic loads, contact pressure, and thread shear. The FE method enhances these capabilities by incorporating contacts and nonlinear effects into the design. It offers a more realistic representation of components and enables the calculation of multi-bolted connections.
In our training, you will learn the calculation process according to VDI 2230 and learn about the four model classes according to VDI 2230 Sheet 2. You will practice FEM modeling and evaluation of bolts and learn how to efficiently carry out bolt assessment and verification up to the automatically generated report for model classes II and III. Furthermore, we deal with the calculation of contacts and the consideration of other nonlinear effects using numerous practical Ansys-based examples.
As a developer, design engineer, or user of simulation software, take this opportunity to expand your skills and optimize your daily work. You will also receive a free 3-month license for "Bolt Assessment inside Ansys".
Get a first impression and test the first eLearning module of this training course without any obligation. No costs, no notice period.
Detailed agenda for this 3-day training
Day 1
01 Bolts as detachable connection elements
- Technical applications
- How bolts function
- Design principles and properties of a standard bolt
- Discussion: requirements and application scenarios relating to bolt connections
- Damage scenarios in cases of unsatisfactory bolt layout
02 Principles underlying the VDI 2230 guidelines (Sheets 1 and 2)
- Overview of Parts 1 and 2 of the guidelines
- Concept of nominal stress
- Cyclical loading and fatigue limit
- Idealization of the bolt connection
- Elastic resilience and joint diagram
- Practice: understanding joint diagram
03 Generating geometric models of bolt connections
- Methodology and aims of FE analysis
- Modeling component resilience
- Idealization of bolt bodies and nuts
- Modeling of clamped parts
- Practice: geometry preparation of a bolt connection
04 Bolt connection in FE simulation
- Applying bolt pretension
- Assembly loads and operational loads
- Introduction to nonlinear contacts
- Introduction to meshing
- Results and evaluation
- Practice: FE analysis of a bolt connection
Day 2
05 Deepening your understanding of the VDI 2230 guidelines
- The load introduction factor “n”
- Eccentric assembly and loads
- The main dimensioning formula
- Aspects of assembling and tightening bolts
- Reduction of pretension due to embedding
- Practice: Representation of the load introduction factor and embedding effects in the joint diagram
06 FE model classes I-IV
- From simple bonded contacts to beam and solid joint models
- Component resilience, pretension, interface contact and bearing contacts
- Determining load values
- Comparison of model classes
- Practice: beam connections
- Example: line bodies for use with model class II
07 Modeling contacts for bolt connections
- Defining nonlinear and linear contacts
- Contact algorithms, contact stiffness and penetration
- The connection between contact settings and load values
- Best practice for the contact settings used when assessing bolted joints
- Practice: the impact of contact settings on the accuracy of results
08 Working productively on real models
- How to deal with large numbers of bolts and load steps
- Repetitive workflows: the object generator
- Opportunities for automation
- Using “Bolt Assessment inside Ansys”
- Practice: Gear box housing for a tractor
Day 3
09 Analytical verification calculation in accordance with VDI 2230
- Analyzing and verifying a bolt connection
- Calculation steps R0 – R13
- Static and dynamic strength verification
- Practice: performing an analytical verification calculation for bolted joints on a cap of a pressure vessel
- Initial thoughts on putting everything into practice in the world of FE analysis
10 Using the FE method to perform verification calculations of bolted joints
- Commonalities and differences compared to the analytical approach within VDI 2230
- Advantages of FE analysis
- The conventional method of analysis in the FE world
- Evaluating the load values
- Practice: verification of bolted joints on a cap of a pressure vessel using FE simulation
11 Verification using Bolt Assessment inside Ansys
- Automated analysis of multi-bolted connections
- Integrated KISSsoft database containing bolt standards
- Automatic definition of critical load combinations and loading conditions
- Visualization of the safety factors
- Standardized verification and report
- Practice: bolt connection between piston and piston rod
- Practice: a multi-bolted flange connection
12 Additional methods for analyzing bolts using the FE method
- Further aspects of Sheet 2 of VDI 2230
- Using the FE method to determine component resilience
- The parameters of eccentric connections within FE models
- Evaluating local stress within notch roots
- Practice: evaluating local stress in a model class IV approach and comparison with evaluation using the FKM method
Your Trainers
Dario Rüegg
Vincent Constantin
Markus Meingast
Klaus Graf
Florian Hollaus
Placement in the CADFEM Learning Pathway
Participant data
Additional information
Commentary
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