Finite Element Evaluation of Blast Design Response Criteria for Load-Bearing Precast Wall Panels

2015 ◽  
Vol 6 (1) ◽  
pp. 155-173 ◽  
Author(s):  
Joseph M. Nickerson ◽  
Patrick A. Trasborg ◽  
Clay J. Naito ◽  
Charles M. Newberry ◽  
James S. Davidson
Keyword(s):  
Finite Element ◽  
Response Criteria ◽  
Load Bearing ◽  
Blast Design ◽  
Wall Panels

Finite Element Assessment of Methods for Incorporating Axial Load Effects into Blast Design SDOF Analyses of Precast Wall Panels

2015 ◽  
Vol 29 (5) ◽  
Author(s):  
Joseph M. Nickerson ◽  
Patrick A. Trasborg ◽  
Clay J. Naito ◽  
Charles M. Newberry ◽  
James S. Davidson
Keyword(s):  
Finite Element ◽  
Axial Load ◽  
Blast Design ◽  
Wall Panels ◽  
Load Effects

Thermal Performance of Load Bearing Cold-formed Steel Walls under Fire Conditions using Numerical Studies

2014 ◽  
Vol 5 (3) ◽  
pp. 261-290 ◽  
Author(s):  
Poologanathan Keerthan ◽  
Mahen Mahendran
Keyword(s):  
Finite Element ◽  
Thermal Behaviour ◽  
Finite Element Models ◽  
Fire Performance ◽  
Wall Panel ◽  
Load Bearing ◽  
Design Fire ◽  
Numerical Studies ◽  
Wall Panels ◽  
Fire Conditions

Cold-formed Light gauge Steel Frame (LSF) wall systems are increasingly used in low-rise and multi-storey buildings and hence their fire safety has become important in the design of buildings. A composite LSF wall panel system was developed recently, where a thin insulation was sandwiched between two plasterboards to improve the fire performance of LSF walls. Many experimental and numerical studies have been undertaken to investigate the fire performance of non-load bearing LSF wall under standard conditions. However, only limited research has been undertaken to investigate the fire performance of load bearing LSF walls under standard and realistic design fire conditions. Therefore in this research, finite element thermal models of both the conventional load bearing LSF wall panels with cavity insulation and the innovative LSF composite wall panel were developed to simulate their thermal behaviour under standard and realistic design fire conditions. Suitable thermal properties were proposed for plasterboards and insulations based on laboratory tests and available literature. The developed models were then validated by comparing their results with available fire test results of load bearing LSF wall. This paper presents the details of the developed finite element models of load bearing LSF wall panels and the thermal analysis results. It shows that finite element models can be used to simulate the thermal behaviour of load bearing LSF walls with varying configurations of insulations and plasterboards. Failure times of load bearing LSF walls were also predicted based on the results from finite element thermal analyses. Finite element analysis results show that the use of cavity insulation was detrimental to the fire rating of LSF walls while the use of external insulation offered superior thermal protection to them. Effects of realistic design fire conditions are also presented in this paper.

Precast/Prestressed Concrete Experiments Performance on Non-Load Bearing Sandwich Wall Panels

2011 ◽  
Author(s):  
Clay J. Naito ◽  
John M. Hoemann ◽  
Jonathon S. Shull ◽  
Aaron Saucier ◽  
Hani A. Salim ◽  
...  
Keyword(s):  
Prestressed Concrete ◽  
Load Bearing ◽  
Wall Panels ◽  
Sandwich Wall ◽  
Precast Prestressed Concrete

scholarly journals Testing Crack Resistance of Non-Load-Bearing Ceramic Walls with Door Openings

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1379
Author(s):  
Tomasz Kania ◽  
Valery Derkach ◽  
Rafał Nowak
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Building Structure ◽  
The Finite Element Method ◽  
Short Term ◽  
Load Bearing ◽  
Door Opening ◽  
Partition Walls ◽  
Internal Partition ◽  
New Buildings

Cracking in non-load-bearing internal partition walls is a serious problem that frequently occurs in new buildings within the short term after putting them into service or even before completion of construction. Sometimes, it is so considerable that it cannot be accepted by the occupiers. The article presents tests of cracking in ceramic walls with a door opening connected in a rigid and flexible way along vertical edges. The first analyzes were conducted using the finite element method (FEM), and afterward, the measurements of deformations and stresses in walls on deflecting floors were performed on a full scale in the actual building structure. The measurements enabled to determine floor deformations leading to cracking of walls and to establish a dependency between the values of tensile stresses within the area of the door opening corners and their location along the length of walls and type of vertical connection with the structure.

Research of the Thermal Performance of a New Type of Rock Wool Color Steel Sandwich

2013 ◽  
Vol 482 ◽  
pp. 81-84
Author(s):  
Ke Wei Ding ◽  
Wu Sun ◽  
Dong Chen
Keyword(s):  
Finite Element ◽  
Performance Analysis ◽  
Thermal Performance ◽  
Finite Element Software ◽  
Interior Wall ◽  
Wall Panels ◽  
New Ideas ◽  
New Type ◽  
Rock Wool

This paper introduces a new type of rock wool color steel sandwich which is produced by Anhui sambo steel co.,Ltd. The thermal performance analysis of this kind of sandwich is conducted through the finite element software ANSYS in this paper, which reveal the widespread existence of cold bridge phenomenon. And this paper also propose several new ideas on how to reduce the cold bridge condensation of interior wall panels of building.

Age Dependent and Anisotropic Material Properties of Immature Porcine Sclera

2013 ◽  
Author(s):  
Jami M. Saffioti ◽  
Brittany Coats
Keyword(s):  
Finite Element ◽  
Material Properties ◽  
Anisotropic Material ◽  
Computational Models ◽  
Fe Model ◽  
Ocular Tissues ◽  
Load Bearing ◽  
Anisotropic Properties ◽  
Age Dependent ◽  
Testing Protocols

Current finite element (FE) models of the pediatric eye are based on adult material properties [2,3]. To date, there are no data characterizing the age dependent material properties of ocular tissues. The sclera is a major load bearing tissue and an essential component to most computational models of the eye. In preparation for the development of a pediatric FE model, age-dependent and anisotropic properties of sclera were evaluated in newborn (3–5 days) and toddler (4 weeks) pigs. Data from this study will guide future testing protocols for human pediatric specimens.

Evaluation of fire performance of lightweight concrete wall panels using finite element analysis

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Irindu Upasiri ◽  
Chaminda Konthesingha ◽  
Anura Nanayakkara ◽  
Keerthan Poologanathan ◽  
Brabha Nagaratnam ◽  
...  
Keyword(s):  
Finite Element ◽  
Lightweight Concrete ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Fire Performance ◽  
Concrete Wall ◽  
Aggregate Concrete ◽  
Content Type ◽  
Wall Panels ◽  
Foamed Concrete

Purpose In this study, the insulation fire ratings of lightweight foamed concrete, autoclaved aerated concrete and lightweight aggregate concrete were investigated using finite element modelling. Design/methodology/approach Lightweight aggregate concrete containing various aggregate types, i.e. expanded slag, pumice, expanded clay and expanded shale were studied under standard fire and hydro–carbon fire situations using validated finite element models. Results were used to derive empirical equations for determining the insulation fire ratings of lightweight concrete wall panels. Findings It was observed that autoclaved aerated concrete and foamed lightweight concrete have better insulation fire ratings compared with lightweight aggregate concrete. Depending on the insulation fire rating requirement of 15%–30% of material saving could be achieved when lightweight aggregate concrete wall panels are replaced with the autoclaved aerated or foamed concrete wall panels. Lightweight aggregate concrete fire performance depends on the type of lightweight aggregate. Lightweight concrete with pumice aggregate showed better fire performance among the normal lightweight aggregate concretes. Material saving of 9%–14% could be obtained when pumice aggregate is used as the lightweight aggregate material. Hydrocarbon fire has shown aggressive effect during the first two hours of fire exposure; hence, wall panels with lesser thickness were adversely affected. Originality/value Finding of this study could be used to determine the optimum lightweight concrete wall type and the optimum thickness requirement of the wall panels for a required application.

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