VDI 2230 Blatt 1 2015-11 PDF

Full title and description

STB VDI 2230 Blatt 1: Systematic calculation of highly stressed bolted joints — Joints with one cylindrical bolt. This VDI guideline provides a step‑by‑step, calculation‑based method for the design and verification of single‑bolt (cylindrical single screw) connections subject to high static or dynamic loads; it includes theoretical derivations, tabulated material and geometric values, worked examples and guidance for practical application.

Abstract

VDI 2230 Blatt 1 (2015‑11) is the recognised engineering guideline for calculation and design of highly stressed single‑bolt connections. It covers centric and eccentric clamping, combined axial, transverse and bending loads, and presents a model based on the assumption that clamped cross sections remain plane. The document includes calculation procedures, design tables (dimension range M4–M39), example problems and guidance on when experimental or numerical validation is advisable.

General information

• Status: Current / technical rule (corrected edition replacing the 2014 version).
• Publication date: 2015‑11 (November 2015).
• Publisher: VDI — Verein Deutscher Ingenieure (VDI e.V.), committee: Getriebe und Maschinenelemente / Produkt‑ und Prozessgestaltung.
• ICS / categories: 21.060.10 (Bolts, screws, studs and related fastenings).
• Edition / version: VDI 2230 Blatt 1:2015‑11 (corrected edition; purchasers of the 2014‑12 version received the 2015 corrigendum).
• Number of pages: 182 pages.

Scope

The guideline applies primarily to high‑strength steel bolts with standard fastening threads (60° flank angle) in strength classes typically 8.8 to 12.9 (equivalently classes 70 and 80), and to bolted joints where the working load is transmitted frictionally through the clamped parts. It is formulated for bolt diameters and thread sizes from approximately M4 to M39. The method may be applied by analogy to other materials or sizes, but tabulated material values and assumptions (e.g. room temperature data) must be considered. The guideline does not replace the need for experimental or numerical (FEM) verification for critical joints.

Key topics and requirements

• Systematic calculation procedure for single‑bolt (cylindrical screw) connections: decomposition of loads, determination of preload, and verification against strength limits.
• Treatment of centric and eccentric clamping, including combined axial, transverse and bending effects and the influence of moment arms.
• Extensive tabulated values and empirical parameters (tables A1–A12 range) for common thread sizes and materials (M4–M39), plus worked examples.
• Guidance on selection of minimum/maximum assembly preload, installation method effects (torque vs. tensioning), and the use of an “anziehfaktor” (assembly factor) in checking mounting loads.
• Recommendations to apply numerical/experimental checks for critical or borderline applications and notes on limitations (temperature dependence, extreme stresses, contact area constraints).

Typical use and users

Primary users are mechanical design engineers, stress analysts, fastener specialists, machine‑element designers, and technical experts in industries such as automotive, gear and transmission design, heavy machinery, and plant engineering. The guideline is used for component design, verification of assembly/preload procedures, failure analysis, and as a reference when developing bolt calculation software or FEM validation studies.

Related standards

VDI 2230 Blatt 2 (Multi‑bolted joints) is the companion document for multi‑bolt fields and complements the single‑bolt procedures given in Blatt 1. The guideline also refers to material/property standards for fasteners (for example DIN EN ISO 898‑1 / ISO 898‑1 on mechanical properties of bolts, screws and studs) and to applicable machine‑element and joint standards when determining external loading or gasketed flange behaviour. For multi‑bolt methods and further design context see VDI 2230 Blatt 2.

Keywords

VDI 2230, bolted joint calculation, screw connection, single‑bolt, cylindrical bolt, preloading, assembly torque, eccentric loading, M4–M39, strength classes 8.8–12.9, bolted joint design.

FAQ

Q: What is this standard?

A: VDI 2230 Blatt 1 is a VDI guideline (technical rule) that sets out a systematic calculation procedure for highly stressed single‑bolt (cylindrical) connections, providing derivations, tables and worked examples to support reliable design.

Q: What does it cover?

A: It covers calculation steps for centric and eccentric clamping, combined axial/ transverse/ bending loads, preload selection and verification, tabulated parameters for common bolt sizes and strengths, and example calculations. It also highlights limitations and when to use experimental or numerical validation.

Q: Who typically uses it?

A: Mechanical design and calculation engineers, fastener and joining specialists, machine‑element designers, and organisations validating joint behaviour in engines, gearboxes, flanges and heavy machinery. It is widely used in industry and education.

Q: Is it current or superseded?

A: The corrected edition VDI 2230 Blatt 1:2015‑11 is the current technical rule and was issued as a corrected replacement for the 2014 edition; users were provided with the corrected document. Always check with VDI or your national standards provider for later amendments or corrigenda.

Q: Is it part of a series?

A: Yes — VDI 2230 is published as a multi‑part guideline. Blatt 1 treats single‑bolt (cylindrical) connections; Blatt 2 covers multi‑bolt fields and methods to identify the most stressed bolt within a pattern. Both parts are intended to be used together for comprehensive bolted‑joint design.

Q: What are the key keywords?

A: Bolted joint calculation, preload, screw connection, VDI 2230, single‑bolt, eccentric loading, M‑series threads, strength class 8.8–12.9.