codeproject vb.net barcode generator BOLTED AND RIVETED JOINTS 22.20 in Software

Creating European Article Number 13 in Software BOLTED AND RIVETED JOINTS 22.20

BOLTED AND RIVETED JOINTS 22.20
Scan EAN 13 In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Print European Article Number 13 In None
Using Barcode generator for Software Control to generate, create GS1 - 13 image in Software applications.
FASTENING, JOINING, AND CONNECTING
GTIN - 13 Recognizer In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
Draw European Article Number 13 In Visual C#
Using Barcode printer for .NET framework Control to generate, create EAN-13 Supplement 5 image in Visual Studio .NET applications.
If the slenderness ratio lG/d falls between 0.4 and 1.0, it is reasonable to assume a stiffness ratio RJB of 1.0. When the slenderness ratio lG/d falls below 0.4, the stiffness of the joint increases dramatically. At a slenderness ratio of 0.2, for example, RJB is 4.0 and climbing rapidly (Ref. [22.6], pp. 199 206). Example. For the bolt shown in Fig. 22.10 used in a 3.25-in (82.6-mm) thick joint, RJB = 3(3.25) = 3.23 7(0.625)
Drawing EAN13 In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create EAN-13 Supplement 5 image in ASP.NET applications.
EAN13 Drawer In .NET Framework
Using Barcode generator for .NET framework Control to generate, create European Article Number 13 image in VS .NET applications.
Since we computed the bolt stiffness earlier as 2.265 106 lb/in (396 kN/mm), the joint stiffness will be kJ = 3.23(2.265 106) = 7.316 106 lb/in (1280 kN/mm). Stiffness of Gasketed Joints. The procedure just defined allows you to determine the approximate stiffness of a nongasketed joint. If a gasket is involved, you should use the relationship 1 1 1 = + kT kJ kG (22.12)
EAN13 Creation In VB.NET
Using Barcode encoder for VS .NET Control to generate, create EAN-13 image in .NET applications.
Bar Code Creation In None
Using Barcode printer for Software Control to generate, create barcode image in Software applications.
You may have to determine the compressive stiffness of the gasket by making an experiment or by contacting the gasket manufacturer, since very little information has been published on this subject (but see Chap. 25). A few typical values for pressure-vessel gasket materials are given in Table 22.3, but these values should be used for other gaskets with caution. Note that the stiffness of a gasket, like the stiffness of everything else, depends on its cross-sectional area. The values given in Table 22.3 are in terms of pressure or stress on the gasket versus deflection, not in terms of force versus deflection. Before you can combine gasket stiffness with joint stiffness, therefore, you must determine how large an area of the gasket is loaded by a single bolt (total gasket area divided by the number of bolts). This per-bolt area is multiplied by stress to determine the stiffness in terms of force per unit deflection. For example, the compressed asbestos gasket listed in Table 22.3 has a total surface area of 11.2 in2 (7219 mm2). If it is clamped by eight bolts, the per-bolt area is 1.4 in2 (903 mm2). The stiffness is listed in Table 22.3 as 6.67 102 ksi/in (181 MPa/mm). In force terms, per bolt, this becomes 6.67 105 (1.4) = 9.338 105 lb/in (1.634 102 kN/mm). The stiffness values given in Table 22.3 are for gaskets in use, after initial preloading. Gaskets exhibit a lot of hysteresis. Their stiffness during initial compression is a lot less (generally) than their stiffness as they are unloaded and reloaded. As long as the usage cycles do not take the stress on the gasket above the original assembly stress, their behavior will be repetitive and elastic, with only a little hysteresis, as suggested by Fig. 22.11.And when analyzing the effect of loads on joint behavior, we are interested only in how the gaskets act as they are used, not in their behavior during assembly.
Make Code 39 Full ASCII In None
Using Barcode creator for Software Control to generate, create Code 3/9 image in Software applications.
Making UPC - 13 In None
Using Barcode drawer for Software Control to generate, create European Article Number 13 image in Software applications.
22.3.2 Selecting the Target Preload Our joint will perform as intended only if it is properly clamped together by the fasteners. We must, therefore, select the preload values very carefully.
Code 128A Encoder In None
Using Barcode maker for Software Control to generate, create Code 128 Code Set A image in Software applications.
Drawing Data Matrix 2d Barcode In None
Using Barcode generator for Software Control to generate, create Data Matrix image in Software applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
USS Code 93 Generation In None
Using Barcode creation for Software Control to generate, create USS 93 image in Software applications.
Code-39 Drawer In Objective-C
Using Barcode drawer for iPad Control to generate, create Code 3/9 image in iPad applications.
BOLTED AND RIVETED JOINTS 22.21
Decoding Code 39 Extended In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
Linear Creation In Java
Using Barcode encoder for Java Control to generate, create 1D Barcode image in Java applications.
BOLTED AND RIVETED JOINTS
Bar Code Maker In None
Using Barcode maker for Online Control to generate, create bar code image in Online applications.
Bar Code Reader In Java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
TABLE 22.3 Gasket Stiffness
Encoding Code 128A In Objective-C
Using Barcode printer for iPad Control to generate, create USS Code 128 image in iPad applications.
Draw Code 39 Full ASCII In None
Using Barcode drawer for Microsoft Excel Control to generate, create Code 39 image in Office Excel applications.
FIGURE 22.11 Typical stress versus deflection characteristics of a spiral-wound, asbestos-filled gasket during (a) initial loading, (b) unloading, and (c) reloading.
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
BOLTED AND RIVETED JOINTS 22.22
FASTENING, JOINING, AND CONNECTING
Acceptable Upper Limit for the Tension in the Bolts. In general, we always want the greatest preload in the bolts which the parts (bolts, joint members, and gasket) can stand. To determine the maximum acceptable tension in the bolt, therefore, we start by determining the yield load of each part involved in terms of bolt tension.The force that will cause the bolt material to yield is FBY = SYB AS (22.13)
Let us begin an example using the joint shown in Fig. 22.12. We will use the bolt illustrated in Fig. 22.10. Let us make the joint members of ASTM A441 steel. The yield strength of our J429 Grade 8 bolts is 81 kpsi (558 MPa), worst case. For the bolts, with AS = 0.232 in2 (150 mm2), FBY = 81 103 (0.232) = 18.8 103 lb (83.6 kN) For the joint, we determine the yield load of that portion of the joint which lies under the head of the bolt or under the washer (using the distance across flats of the head or nut to compute the bearing area). If our joint material is ASTM A441 steel
FIGURE 22.12 Joint loaded in tension. This is the joint analyzed in the text. The bolts used here are those shown in Fig. 22.10.
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
Copyright © OnBarcode.com . All rights reserved.