This paper is the result of both experimental and numeric analyses on pallet rack components. Two cyclic testing protocols for beam‐end connectors of adjustable racking systems are compared; such experiments are named as “code type” and “Castiglioni”. Both protocols share the same test mock‐up: an assembly of a doubly‐pinned upright segment with a cantilever beam specimen. These tests consist in an up‐to‐failure increasing push‐pull process at the free beam end. In the “code type” test, the imposed displacement loops are centered around zero; conversely, in the “Castiglioni” tests, both upward and downward displacement segment runs are centered around a vertical static equilibrium situation (to take the gravitational load into account). The “code type” test is expected to result in a higher number of cycles than the “Castiglioni” one because of the two following features of the latter: (i) the gravitational load is always present, thus resulting in a higher demanding test, and (ii) the failure point is precisely predefined and usually produced before the total breakdown. This paper describes and compares experiments using both protocols. Additionally, these tests are numerically simulated.
Nominated for the Bernt Johansson Outstanding Paper Awards at Nordic Steel 2019
Over the past few decades, the cold‐formed steel industry has developed a manufacturing technique for producing self‐supporting arches from trapezoidal steel sheets. The press‐forming procedure is based on introducing transverse corrugations into the main direction of the flat profile in order to bend it. The main problem is that these indentations, which are essential to curve the profile, change the effective properties of the original steel sheet. Currently, there is no design code or standardized test procedure that can be used to obtain the effective properties of the corrugated profile. This research project analyses the behaviour of the corrugated profile when it is subjected to pure compression and compares it with the behaviour of the flat profile.
La mecánica del medio continuo parte de la mecánica de sistemas de partículas que interaccionan para dar lugar a un modelo material, sólido o fluido, mucho más genérico que el de sólido rígido. La mecánica del medio continuo evoluciona en dos direcciones bien definidas, la mecánica de sólidos deformables y la mecánica de fluidos.
Este primer curso centrará la atención sólo en aquellos aspectos puramente mecánicos, dejando para cursos más avanzados la interacción con otras disciplinas -la termodinámica, la transferencia de calor o el electromagnetismo - así como el análisis detallado de la mecánica de los sólidos deformables y de los fluidos y sus aplicaciones tecnológicas.
El principal objetivo del curso consiste pues en establecer las bases físicas y matemáticas comunes a todas estas disciplinas bajo un único cuerpo de doctrina.
El texto principal del libro se completa con 20 problemas resueltos, planteados como pruebas de evaluación en la E.T.S. Ingeniería Industrial de Barcelona.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.