Download Vdi 2230 English Pdf

The calculations are based on the assumption that the strained cross-sections remain plane. Selected examples illustrate the calculation process. As a support for the calculation the related screw calculation software based on the standard VDI 2230, available from the Beuth Verlag, can be used.

SR1 Bolt Calculation to VDI 2230 SR1 / SR1+ Bolt Calculation Software (C) Copyright 1993-2019 by HEXAGON Software, Berlin Calculation Basis SR1 Software calculates, in accordance with VDI 2230, high-stress bolted joints with concentric or eccentric strain and load. The calculation makes enables graphical representation of load-extension diagrams and scale drawings.

Quick Input Quick input provides input of all data in only one dialogue window. Click 'Calc' button for bolted joint calculation and get result as desired at 'Display' (tables, drawings, diagrams). Dimensioning Different combinations of bolt diameters/strength classes are calculated from the input of concentric/eccentric axial force or shearing force, static/dynamic load and tightening method which are then used as a basis for more detailed calculation. Data Base for Bolts and Threads You can choose any of the following items from the database: shank and waisted bolt dimensions according to ISO, as well as metric standard and fine threads, bolt heads in accordance with ISO 4762, ANSI B18.3, ISO 4014, ISO 4017, ANSI HEX, ANSI HEAVY HEX, ISO 10642, IFI 536, IFI 538, EN 1665, twelve point flange bolts, and nuts in accordance with ISO 4032, ISO 4034, ANSI1, ANSI2 and ANSI HEAVY. The data base files may be appended and altered as you require. Winrar remover activation key download.

Alternatively, you can also define any number of special stepped bolts. Additional data base files and corresponding drawings are available for fasteners still commonly used in the United States with inch ( English ) thread dimensions. While the data base information is provided for diameters and pitch combinations (threads/inch) all dimensions in these data base files have been converted to SI units, i.e. 1.00 inch = 25.4 mm. And Ksi stress factors are converted to N/mm². Clamping Parts You can freely define the dimensions, material, E-Modulus, and permissable pressure of up to 20 clamping plates. The database can be appended to include additional materials, E-Modulus, and permissible pressure information to meet the needs of the user.

The experienced user can create special effects with clamping pieces to modify the SR1 deflection calculations to supplement FEA calculations and Torque / Angle Signature measurements. Concentric and Eccentric Load SR1 calculates bolted joints with concentric and eccentric strain and load. Tightening Procedure You can define yield point coefficient, tightening torque, or required assembly prestressing load.

SR1 calculates min/max values by tolerances of tightening tool and friction coefficients Friction The most important friction coefficients for thread, head seat and seam are available for use in the integrated data base. The friction coefficient data base can be appended by the user to include new combinations of materials. Friction coefficients can be determined experimentally by fastener research test machines such as the R S Technologies LabMaster Model 9504 which performs tests according to DIN 946.

The slope, R_MA: Nm/degree of the Torque / Angle Signature for a given bolted joint can be used to help verify the uniformity of friction effects. Actual experience has shown that it is very important to test all combinations of lubricants, plating and coatings to verify the uniformity and reliability of the friction coefficient data. In practice it is not uncommon to see variations of 2:1 in the friction coefficients as fasteners are repeatedly tightened and loosened. Material specifications must be made to minimize such variations. Clearly it is the responsibility of the user to know as precisely as possible the degree of reliability that can be assigned to his design assumptions.

The SR1 program can provide important documentation for bolted joint designs where complete traceabilty is required according to ISO-9000. Tightening factor and tool precision discrepancies are available from the SR1 - VDI 2230 database.

These are guidelines based upon actual experience and measurements made in the field. The individual user should independently verify the actual tightening results obtained for each specific assembly. The 'Release Angle Method' provides the most reliable, practical means to verify the actual pre-load tension for a given fastener installation. It is important to note that SR1 and VDI 2230 are design guides which must be supplemented by experimental measurements to verify all calculations.

Material strengths and friction coefficients and key dimensions must be documented to assure that actual practice corresponds to the design assumptions. M-Alpha Diagram M-Alpha Diagram and F-Alpha Diagram with torque and clamping force are displayed as a function of angle of turn starting at the 'Elastic Origin'. The 'Elastic Origin' is located by projection of the tangent to the tightening curve at the pre-load point to the starting torque level. Skachatj kivi koshelek na kompjyuter dlya windows 7 10. The starting torque level is '0' unless a prevailing torque such as is introduced by thread friction on a locking-nut or self tapping effort is present.