Safe application of the VDI 2230 guideline
Main focus
- Verification and calculation of highly stressed bolted joints according to guideline VDI 2230
- Loads on a bolted joint - effects and findings
- Tightening and assembly methods - influences and processes
- Securing bolted connections - significance and findings
On the subject
The ever-increasing competitive pressure requires innovative ideas in order to secure or expand one's own market position. Increasing demands to comply with CO2-neutral process sequences are challenges in the conceptual design of bolted joints. In addition to improving functional properties, the aim of innovations in vehicle, machine and plant construction is to reduce the cost and weight of components. Costly failures due to damage to bolted connections occur time and again. Such damage can be avoided through calculation and design measures that are as compliant with the standard as possible.
The VDI 2230 guideline has become established worldwide as the calculation basis for the selection and strength verification of bolted connections. The conformity of connecting elements and bolted constructions with this guideline is increasingly demanded not only by testing organizations, but also by customers and suppliers.
Objective
In this seminar, you will learn how to systematically design and calculate highly stressed bolted connections in accordance with the VDI 2230 guideline. You will gain an overview of the load-bearing capacity, structural design and assembly of bolted connections. In addition, you will learn more about the special features that are not covered by the guideline and which must be taken into account when optimizing bolted connections. The practical examples will raise your awareness of the causes and consequences of self-loosening as well as the application and limits of bolt locking devices and how to find an optimum solution.
Contents
Introduction to the topic of screws
- Failure mechanisms of bolted joints
- Use of screw locking devices
- Presentation of screw types and strength classes
- Scope and limits of the VDI guideline
- Force ratios and tension diagram
Calculation steps R0 to R6 according to VDI 2230 Sheet 1
- Nominal diameter
- Tightening factor (torque-, angle- and yield point-controlled tightening methods)
- Pressure, loads due to shear forces/moments
- Operating force, screw force and force ratio
- Preload losses (setting and temperature dependencies)
- Calculated and permissible mounting preload force
Strength verifications using calculation steps R7 to R13 and examples
- Safety against yielding (maximum bolt force, torsional moment)
- Safety against fatigue fracture/time resistance
- Safety against excessive surface pressure
- Screw-in depth (maximum tensile forces)
- Safety against sliding and shearing (available residual clamping force)
- Tightening torque (influence of friction and lubrication)
- Constructive measures and design rules
- Examples from the VDI guideline
- Practical part I with MDESIGN bolt
VDI 2230 Sheet 2
- Methods for determining the load distribution (rigid body, elastomechanical and FE approach)
- Torsional moment-loaded bolt bays, tensile load, moment load
- Elastomechanics - Bedding
- Model classes for FE calculations
- FEM - Necessary calculation parameters for VDI Sheet 1
- Practical part II with MDESIGN multibolt
- Overview: Bolt calculation according to Eurocode 3
Target group
Engineers and specialists from the fields of development, design and calculation, teachers from educational institutions, experts from research institutions and testing companies.
Prices
- First participant of a company: 790,- €*
- Each additional participant from the same company: 580,- €*
- University members (lecturers and students): 295,- €
All prices plus VAT
(* As an MDESIGN service customer, you benefit from a customer advantage of 10%.)
Documents
You will receive detailed seminar documentation and a certificate of attendance.
Your speaker Dipl.-Ing. Heinz-Markus Höltermann
- Studied mechanical engineering at the Ruhr University Bochum and the University of Sheffield, specializing in design and automation technology
- Seminar leader with many years of experience for leading national and international industrial companies
- Project and development engineer for screw calculations
