Results 241 to 250 of about 249,595 (276)
Some of the next articles are maybe not open access.
Embedment and withdrawal stiffness predictions of self-tapping screws in timber
Construction and Building Materials, 2022In the construction of modern multi-storey mass timber structures, self-tapping screws are the preferred fasteners. In order the maximize the strength and stiffness of self-tapping screw connections, the screws are often inserted into timber members at an angle other than 90 degrees to the face of the member.
Md Abdul Hamid Mirdad +2 more
exaly +3 more sources
Engineering Structures, 2018
Abstract The research presented in this paper examines the performance of 3-ply cross-laminated timber (CLT) panels connected with self-tapping screws (STS). Half-lap joints with STS loaded in either shear or withdrawal along with an innovative solution combining these two approaches were evaluated in a total of 24 quasi-static monotonic and 15 ...
Afrin Hossain +2 more
openaire +1 more source
Abstract The research presented in this paper examines the performance of 3-ply cross-laminated timber (CLT) panels connected with self-tapping screws (STS). Half-lap joints with STS loaded in either shear or withdrawal along with an innovative solution combining these two approaches were evaluated in a total of 24 quasi-static monotonic and 15 ...
Afrin Hossain +2 more
openaire +1 more source
THE IMPACTS OF SCREW TIP, INCLINATION ANGLES AND NUMBER OF PENETRATION LAYERS ON SCREW WITHDRAWAL CAPACITY IN AUSTRALIAN MACHINE GRADED PINE [PDF]
World Conference on Timber Engineering (WCTE 2023), 2023 Connections play an important role in timber structures as they govern the overall stiffness, load-carrying capacity, and most of the ductility in a timber structure. Due to the high axial load-carrying capacity and ease of installation, self-tapping screws are nowadays one of the most widely used fasteners in timber construction.
Yan, Zidi +4 more
openaire +1 more source
Nail and screw withdrawal strength of laminated veneer lumber made up hardwood and softwood layers
Construction and Building Materials, 2007 The objective of this research was to evaluate screw and nail withdrawal strength properties of veneer laminated lumber manufactured from poplar (Populus nigra) and beech (Fagus orientalis L.) in transverse, radial, and tangential directions.
Prof. Gülser CELEBI, Murat Kılıç
exaly +1 more source
IMPACT OF TIMBER ORIGIN ON SCREW WITHDRAWAL CAPACITY
World Conference on Timber Engineering 2025Ductility in mass timber structures is primarily achieved through connections. The current Australian Timber Standard AS1720.1-2010 has not developed at the same rate as modern timber construction and provides simplified design methods that are not suitable for modern fasteners, such as self-tapping screws (STSs).
Bagley, Dylan, Ottenhaus, Lisa
openaire +2 more sources
IMPACT OF MOISTURE CYCLING ON SCREW WITHDRAWAL CAPACITY OF TREATED AND UNTREATED RADIATA PINE
World Conference on Timber Engineering (WCTE 2023), 2023The increased use of wood products for construction has intensified the need to understand how moisture affects the mechanical properties of timber connections. The withdrawal capacity of dowel-type fasteners, such as screws, needs to be measured, or estimated, for the design of timber systems having connections with axially loaded dowel-type fasteners.
Yermán, Luis +3 more
openaire +3 more sources
Predicting the Screw Withdrawal Load of Commercial Particleboard Manufactured in Korea
Journal of the Korean Wood Science and Technology, 2013 국내에서 생산된 파티클보드에 대한 나사못 유지력을 기존의 식으로부터 수정ㆍ보완된 예측 식으로 나타내기 위해 나사못 유지력실험을 실시했다. 본 연구에 사용된 나사못은 No. 6, No. 8 및 No. 10이었다. 나사못 유지력의 예측 식은 나사못의 직경과 관입길이, 파티클보드의 비중 및 IB의 함수로 나타냈다. 예측 식은 길이가 서로 다른 No. 8 나사못의 실험결과와 상당히 일치하였다. 파티클보드에 대한 실험결과들과 표면에서 나사못 유지력의 예측 값은 비중보다 IB가 더 좋은 예측인자였고, 측면에서는 IB보다 비중이 더 일치하였다.
exaly +3 more sources
A simple unified model for withdrawal of lag screws and glued-in rods
European Journal of Wood and Wood Products, 2010A mean stress failure criterion is applied to the Volkersen-model used for analysis of lag screws and glued-in rods subjected to withdrawal. Expressions are derived for pull-pull as well as pull-push loading conditions. The solutions for glued-in rods appear as special cases of the theory for lag screws, and the usual solutions for a maximum stress ...
Jørgen L. Jensen +3 more
openaire +1 more source
A simplified model for withdrawal of screws from end-grain of timber
Construction and Building Materials, 2012Abstract A simple model based on quasi non-linear fracture mechanics is presented for estimating the withdrawal failure load of screws embedded in wood. The model takes into account major geometrical parameters such as the shank diameter, the length of the threaded area of the screw, the thread projection, and the pitch, and material properties such ...
Jørgen L. Jensen +3 more
openaire +1 more source
Predicting the Withdrawal Load of Wood Screws in Domestic Wood by Screw Diameter, Depth of Penetration and Specific Gravity of Wood [PDF]
Journal of the Korean Wood Science and Technology, 2011 국내에서 생산되는 목재에 대한 나사못 유지력을 기존의 식으로부터 수정된 예측 식으로 나타내기 위해 나사못 뽑기 실험을 실시했다. 본 연구에 사용된 나사못은 No. 6. No. 8 및 N. 10이었다. 예측 식은 길이가 서로 다른 No. 8나사못의 실험결과와 매우 일치하였다. 나사못 유지력의 예측 식은 나사못의 직경과 관입길이 및 목재비중의 함수로 나타냈다. 예측 식은 나사못 길이가 25와 30 mm에서 5% 이내로 작게 예측되었으나 l8과 38 mm에서 큰 값을 보였다.
exaly +2 more sources