The finite element method has been used to develop collapse mechanism maps for the shear response of sandwich panels with a stainless steel core comprising hollow struts. The core topology comprises either vertical tubes or inclined tubes in a pyramidal arrangement. The dependence of the elastic and plastic buckling modes upon core geometry is determined, and optimal geometric designs are obtai...

Sandwich panels are systems with structural functions that used in the field of civil construction, currently, they construction buildings and also as cladding for walls, ceilings, among others. This article shows results an experimental comparative analysis behavior fire resistance two sandwich function composed Polyisocyanurate (PIR) foam core fiberglass-reinforced fabric dimensions 3150 mm ×...

Sandwich composites have been used as lightweight materials in aircraft manufacturing for a long time, from balsa wood sandwich the 1930s to honeycomb and fiber-reinforced polymers sandwich. Its characteristics are considered 'perfect' material aircraft, which has high strength with low density. common floor panels. The core is usually made of Nomex or aluminum honeycomb, while skin 1 "“ 2 ply ...

Composite sandwich materials have yet to be widely adopted in the construction of naval vessels despite their excellent strength-to-weight ratio and low radar return. One barrier to their wider use is our limited understanding of their performance when subjected to air blast. This paper focuses on this problem and specifically the strength remaining after damage caused during an explosion. Carb...

An alternative elastoplastic model based on the Flory’s right Cauchy-Green stretch tensor decomposition is proposed and applied to soft cores of sandwich panels. It does not follow usual methodologies as additive or Kröner-Lee multiplicative strains. an important hyperelastic relation, decomposition, from which total strain separated in two isochoric one volumetric parts. Using this energy cont...

The present research deals with the flexural-torsional buckling analysis of sandwich web and/or flanges tapered doubly-symmetric I-beam. All section walls are composed of two metal face layers and a functionally graded (FG) porous core. It is assumed that the material properties of the porous core vary gradually in the longitudinal direction according to the simple power-law function considerin...

free vibration of sandwich plates with temperature dependent functionally graded (fg) face sheets in various thermal environments is investigated. the material properties of fg face sheets are assumed to be temperature-dependent and vary continuously through the thickness according to a power-law distribution in terms of the volume fractions of the constituents. also, the material properties of...

  Free vibration of sandwich plates with temperature dependent functionally graded (FG) face sheets in various thermal environments is investigated. The material properties of FG face sheets are assumed to be temperature-dependent and vary continuously through the thickness according to a power-law distribution in terms of the volume fractions of the constituents. Also, the material properties ...

This thesis investigates the mechanical behavior of a new type of formable all-metal bi-directionally corrugated sandwich sheet material. Unlike conventional flat sandwich panel materials, this type of sandwich sheet material can be formed into three-dimensional shapes using traditional sheet metal forming techniques. In a first step, the core structure geometry is optimized such as to offer th...