Results 81 to 90 of about 8,118 (208)

Optimal design of trusses with geometric imperfections: Accounting for global instability

, 2010
A topology optimization method is proposed for the design of trusses with random geometric imperfections due to fabrication errors. This method is a generalization of a previously developed perturbation approach to topology optimization under geometric ...
Igusa, Takeru, Mehdi Jalalpour, Jalalpour, Mehdi, Guest, James K., James K. Guest, Takeru Igusa   +5 more
core   +1 more source

A Robust Approach to Topology Optimization Accounting for Geometric Imperfections

, 2014
Performance and cost efficiency are important demands in the design of civil structures such as bridges and high-rise buildings. This thesis investigates topology optimization as a tool for achieving these goals during the design process.
Jansen, Miche
core  

Influence of Geometric Imperfections on Buckling Resistance of Reinforcing Bars during Inelastic Deformation. [PDF]

Materials (Basel), 2020
Korentz J.
europepmc   +1 more source

Increasing the Bucking Capacity with Modal Geometric “Imperfections”

ce/papers
Abstract A recent design paradigm, named modal nudging, exploit geometric “imperfections” with negligible self‐weight change to nudge the baseline structure onto equilibrium paths of greater load‐carrying capacity. Indeed, not all imperfections are detrimental in buckling problems.
Domenico Magisano, Giovanni Garcea
openaire   +1 more source

Influence of Geometric Imperfections on Cold Formed Steel Columns

, 2019
In the field of building construction, usage of cold formed steel is increasing every day because of its light weight and easy construction. However, the design provisions for cold formed steel members are limited.
Rani, Pabbe Swaroopa, Madhavan, Mahendrakumar   +1 more
core  

Geometric imperfections and lower-bound methods used to calculate knock-down factors for composite cylindrical shells

, 2014
The important role of geometric imperfections on the decrease of the buckling load for thin-walled cylinders had been recognized already by the first authors investigating the theoretical approaches on this topic.
Castro, Saullo G. P., Castro, Saullo, Hilburger, Mark, Degenhardt, Richard, Zimmermann, Rolf, Arbelo, Mariano A., Hilburger, Mark W., Khakimova, Regina, Arbelo, Mariano   +8 more
core   +1 more source

Design Methods of Aluminium Pin-Ended Columns with Topology-Optimised Cross-Sections

Buildings
This paper presents a numerical study of topology-optimised pin-end aluminium alloy columns using finite element analysis (FEA). The FEA models integrate geometric imperfections and material nonlinearity, and are validated against experimental findings ...
Mehmet Ali Güler, Aykut Artac, Bora Yildirim, Konstantinos Daniel Tsavdaridis   +3 more
doaj   +1 more source

The Influence of Geometric Imperfections of Different Tolerance Levels on the BucklingLoad of Unstiffened CFRP Cylindircal Shells

, 2019
Unstiffened CFRP cylindrical shells under axial compression prone to buckle. For designing these shells a high discrepancy between the theoretical analytical and the real buckling load has to be handled.
Krause, Dieter, Hartwich, Tobias Simeon
core  

The influence of geometric imperfections of different tolerance levels on the buckling load of unstiffened cfrp cylindrical shells

, 2019
Unstiffened CFRP cylindrical shells under axial compression prone to buckle. For designing these shells a high discrepancy between the theoretical analytical and the real buckling load has to be handled.
Krause, Dieter, Hartwich, Tobias S.
core  

Measurement of internal and external geometric imperfections of lined pipes

, 2016
Carbon steel pipe is often lined with a thin layer of non-corrosive material to protect it against corrosion from sour hydrocarbons. The product is commonly assembled by mechanical expansion of a liner shell bringing it into contact with the inner ...
Harrison, Benjamin Duncan
core   +1 more source