🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
BSI PD ISO/TS 13725:2021 – TC

BSI PD ISO/TS 13725:2021 – TC

$186.33

Tracked Changes. Hydraulic fluid power. Method for evaluating the buckling load of a hydraulic cylinder

Published By Publication Date Number of Pages
BSI 2021 64
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Categories: ,

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

This document specifies a method for the evaluation of the buckling load which:

  1. takes into account a geometric model of the hydraulic cylinder, meaning it does not treat the hydraulic cylinder as an equivalent column,

  2. can be used for all types of cylinder mounting and rod end connection specified in Table 2,

  3. includes a factor of safety, k, to be set by the person performing the calculations and reported with the results of the calculations,

  4. takes into account possible off-axis loading,

  5. takes into account the weight of the hydraulic cylinder, meaning it does not neglect all transverse loads applied on the hydraulic cylinder,

  6. can be implemented as a simple computer program, and

  7. considers the cylinder fully extended.

The method specified is based on the elastic buckling theory and is applicable to single and double acting cylinders that conform to ISO 6020 (all parts) , ISO 6022 and ISO 10762 . If necessary, finite element analyses can be used to verify as well as to determine the buckling load.

The method is not developed for thin-walled cylinders, double-rods or plunger cylinders.

The method is not developed for internal (rod) buckling.

The friction of spherical bearings is not taken into account.

NOTE

This method is based mainly on original work by Fred Hoblit [ 2 ]. This method has been established in reference to the standard NFPA/T3.6.37 [ 1 ].

PDF Catalog

PDF Pages PDF Title
36 National foreword
40 Foreword
41 Introduction
43 1 Scope
2 Normative references
3 Terms and definitions
44 4 Symbols and units
4.1 General
45 4.2 Additional notations
5 General principles
5.1 Purpose
5.2 Description
46 5.3 Dimensional layout of hydraulic cylinder
47 5.4 Common calculation of maximum stress in the rod (for all mounting types) σ max
5.4.1 General
48 5.4.2 Deflexion curve
5.4.3 Bending moment
5.4.4 Maximum value of the bending moment
5.4.5 Maximum stress of the piston rod
49 5.4.6 Mounting types of the cylinder tube and piston rod
50 6 Case of pin-mounted hydraulic cylinders
6.1 Model of the hydraulic cylinder and unknown values
6.2 Linear system
51 6.3 Critical buckling load
6.4 Greatest allowable compressive load
52 7 Case of hydraulic cylinders fixed at the beginning of the cylinder tube and pin mounted at the end of the piston rod
7.1 Critical buckling load
7.2 Linear system
53 8 Case of hydraulic cylinders pin mounted at the beginning of the cylinder tube and fixed at the end of the piston rod
8.1 Critical buckling load
8.2 Linear system
54 9 Case of hydraulic cylinders fixed at both ends
9.1 Critical buckling load
55 9.2 Linear system
56 10 Case of hydraulic cylinders fixed at the beginning of the cylinder tube and free at the end of the piston rod
10.1 Critical buckling load
57 10.2 Linear system
58 11 Case of hydraulic cylinders fixed at both ends with free movement allowed at the end of the piston rod
11.1 Critical buckling load
59 11.2 Linear system
60 Annex A (informative) Example of numerical results
62 Bibliography

Related products

BSI PD ISO/TS 13725:2021 - TC
$186.33