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BS EN 1999-1-5:2023 – TC

BS EN 1999-1-5:2023 – TC

$280.87

Tracked Changes. Eurocode 9. Design of aluminium structures – Shell structures

Published By Publication Date Number of Pages
BSI 2023 203
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1.1 Scope of EN 1999-1-5 (1) EN 1999-1-5 applies to the structural design of aluminium structures, stiffened and unstiffened, that have the form of a shell of revolution or of a round panel in monocoque structures. (2) EN 1999-1-5 covers additional provisions to those given in the relevant parts of EN 1999 for design of aluminium structures. NOTE Supplementary information for certain types of shells is given in EN 1993-1-6 and the relevant application parts of EN 1993 which include: – Part 3-1 for towers and masts; – Part 3-2 for chimneys; – Part 4-1 for silos; – Part 4-2 for tanks; – Part 4-3 for pipelines. (4) The provisions in EN 1999-1-5 apply to axisymmetric shells (cylinders, cones, spheres) and associated circular or annular plates, beam section rings and stringer stiffeners, where they form part of the complete structure. (5) Single shell panels (cylindrical, conical or spherical) are not explicitly covered by EN 1999-1-5. However, the provisions can be applicable if the appropriate boundary conditions are duly taken into account. (6) Types of shell walls covered in EN 1999-1-5 can be (see Figure 1.1): – shell wall constructed from flat rolled sheet with adjacent plates connected with butt welds, termed “isotropic”; – shell wall with lap joints formed by connecting adjacent plates with overlapping sections, termed “lap-jointed”; – shell wall with stiffeners attached to the outside, termed “externally stiffened” irrespective of the spacing of stiffeners; – shell wall with the corrugations running up the meridian, termed “axially corrugated”; – shell wall constructed from corrugated sheets with the corrugations running around the shell circumference, termed “circumferentially corrugated”. [Figure 1.1 – Illustration of cylindrical shell form] (7) The provisions of EN 1999-1-5 are intended to be applied within the temperature range defined in EN 1999-1-1. The maximum temperature is restricted so that the influence of creep can be neglected. For structures subject to elevated temperatures associated with fire, see EN 1999-1-2. (8) EN 1999-1-5 does not cover the aspect of leakage. 1.2 Assumptions (1) The general assumptions of EN 1990 apply. (2) The provisions of EN 1999-1-1 apply. (3) The design procedures are valid only when the requirements for execution in EN 1090-3 or other equivalent requirements are complied with. (4) For the design of new structures, EN 1999 is intended to be used, for direct application, together with EN 1990, EN 1991, EN 1992, EN 1993, EN 1994, EN 1995, EN 1997 and EN 1998. (5) EN 1999 is intended to be used in conjunction with: – European Standards for construction products relevant for aluminium structures; – EN 1090-1, Execution of steel structures and aluminium structures – Part 1: Requirements for conformity assessment of structural components; – EN 1090-3, Execution of steel structures and aluminium structures – Part 3: Technical requirements for aluminium structures.

PDF Catalog

PDF Pages PDF Title
1 30479970
123 A-30413883
124 undefined
134 1 Scope
136 2 Normative references
3 Terms, definitions and symbols
144 4 Basis of design
145 5 Materials and geometry
6 Durability
7 Structural analysis
149 8 Ultimate limit state
159 9 Serviceability limit states
160 Annex A (normative)Formulae for shell buckling analysis
A.1 Use of this annex
A.2 Scope and field of application
A.3 Unstiffened cylindrical shells of constant wall thickness
A.3.1 Notations and boundary conditions
161 A.3.2 Meridional (axial) compression
A.3.2.1 General
A.3.2.2 Critical meridional buckling stresses
162 A.3.2.3 Meridional buckling parameter
163 A.3.3 Circumferential (hoop) compression
A.3.3.1 General
A.3.3.2 Critical circumferential buckling stresses
165 A.3.3.3 Circumferential buckling parameter
166 A.3.4 Shear
A.3.4.1 General
A.3.4.2 Critical shear buckling stresses
167 A.3.4.3 Shear buckling parameters
A.3.5 Meridional (axial) compression with coexistent internal pressure
A.3.5.1 Pressurized critical meridional buckling stress
168 A.3.5.2 Pressurized meridional buckling parameters
A.3.6 Combinations of meridional (axial) compression, circumferential (hoop) compression and shear
170 A.4 Unstiffened cylindrical shells of stepwise wall thickness
A.4.1 General
A.4.1.1 Notations and boundary conditions
A.4.1.2 Geometry and joint offsets
171 A.4.2 Meridional (axial) compression
A.4.3 Circumferential (hoop) compression
A.4.3.1 Critical circumferential buckling stresses
175 A.4.3.2 Buckling strength verification for circumferential compression
A.4.4 Shear
A.4.4.1 Critical shear buckling stress
176 A.4.4.2 Buckling strength verification for shear
A.5 Unstiffened lap jointed cylindrical shells
A.5.1 Geometry and stress resultants
A.5.2 Meridional (axial) compression
A.5.3 Circumferential (hoop) compression
177 A.5.4 Shear
A.6 Unstiffened conical shells
A.6.1 General
A.6.1.1 Notation
A.6.1.2 Boundary conditions
178 A.6.1.3 Geometry
A.6.2 Design buckling stresses
A.6.2.1 Equivalent cylinder
A.6.3 Buckling strength verification
A.6.3.1 Meridional compression
179 A.6.3.2 Circumferential (hoop) compression
A.6.3.3 Shear and uniform torsion
A.7 Stiffened cylindrical shells of constant wall thickness
A.7.1 General
A.7.2 Isotropic walls with meridional stiffeners
A.7.2.1 General
180 A.7.2.2 Meridional (axial) compression
A.7.2.3 Circumferential (hoop) compression
A.7.2.4 Shear
181 A.7.3 Isotropic walls with circumferential stiffeners
A.7.4 Circumferentially corrugated walls with meridional stiffeners
A.7.4.1 General
182 A.7.4.2 Axial compression
183 A.7.4.3 Stiffened wall treated as carrying axial compression only in the stiffeners
184 A.7.4.4 Circumferential (hoop) compression
185 A.7.5 Axially corrugated walls with ring stiffeners
A.7.5.1 General
A.7.5.2 Axial compression
A.7.5.3 Circumferential (hoop) compression
186 A.7.6 Stiffened wall treated as an orthotropic shell
A.7.6.1 General
A.7.6.2 Axial compression
188 A.7.6.3 Circumferential (hoop) compression
A.7.6.4 Shear
189 A.7.7 Equivalent orthotropic properties of corrugated sheeting
190 A.8 Unstiffened spherical shells under uniform circumferential compression
A.8.1 Notations and boundary conditions
191 A.8.2 Critical buckling stresses
A.8.3 Circumferential buckling parameter
193 Annex B (informative)Formulae for buckling analysis of tori-conical and tori-spherical shells
B.1 Use of this Annex
B.2 Scope and field of application
B.3 Notations and boundary conditions
194 B.4 External pressure
B.4.1 Critical external pressure
195 B.4.2 Uniform squash limit external pressure
197 B.4.3 External pressure buckling parameter
B.5 Internal pressure
B.5.1 Critical internal pressure
198 B.5.2 Uniform squash limit internal pressure
199 B.5.3 Internal pressure buckling parameter

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BS EN 1999-1-5:2023 - TC
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