Results 51 to 60 of about 142,500 (303)

Assessment of static and dynamic stresses horse-shoe tunnel with connecting gallery using finite element method: (as a case study) [PDF]

open access: yes, 2018
This paper illustrates the use of MIDAS GTS NX to investigate the tunnel’s simulation in order to highlight the effect of static and dynamic load on the behaviour of tunnel to compare this response expressed in terms of displacement and stresses ...
Hrubešová, Eva, Mohammed, Jaafar
core   +1 more source

Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics

open access: yesAdvanced Science, EarlyView.
Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley   +1 more source

Nonlinear seismic response of 3D canyon in deep soft soils

open access: yesYantu gongcheng xuebao, 2017
A model is proposed for nonlinear seismic response of 3D canyon in deep soft soils. In the model, the viscous-elastic boundary and the equivalent node force input method are combined for wave motion input, and the equivalent linear method is introduced ...
LIANG Jian-wen 1, 2, LIANG Jia-li 2, ZHANG Ji 2, BA Zhen-ning 2
doaj   +1 more source

Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny

open access: yesThe Anatomical Record, EarlyView.
Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund   +4 more
wiley   +1 more source

Seismic Upgrade of an Existing Reinforced Concrete Building Using Steel Plate Shear Walls (SPSW)

open access: yesApplied Sciences
Steel Plate Shear Walls (SPSW) provide significant lateral load capacity and can be utilized in the seismic retrofit and upgrade of existing reinforced concrete (r/c) buildings.
Niki Balkamou, George Papagiannopoulos
doaj   +1 more source

Investigation of ground motion vertical and horizontal component effects on the IDA curves for the regular and irregular steel moment frames [PDF]

open access: yesJournal of Structural and Construction Engineering, 2019
The effect of seismic vertical components on the seismic behavior of structural systems can be considerable. The vertical component of ground motion records can cause the brittle collapse of columns resulting in global collapse of structures. This effect
mehrdad talebzade zaviyeh   +3 more
doaj   +1 more source

Seismic vulnerability assessment and evaluation of high rise buildings in Islamabad [PDF]

open access: yes, 2012
Primarily the aim of this research is to carry out seismic evaluation study of buildings structures in Islamabad in order to propose basic guidelines and suggestions for Pakistan Code.
Alam, Z., Bhatti, A. Q., Varum, H.
core   +1 more source

Challenges and Opportunities in Multi‐Method Integrated Geophysical Prospection of Buried Building Remains at the Sanctuary of Olympia

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT Ancient Olympia was one of the most important sanctuaries and the venue for the Olympic Games in Greek and Roman times. Its remains are located in the Olympia Terrace (Peloponnese, Greece) at the present‐day confluence of the rivers Alpheios and Kladeos at the base of Mount Kronos.
Sarah Bäumler   +10 more
wiley   +1 more source

Comparison of Acceleration Amplification for Seismic Behavior Characteristics Analysis of Electrical Cabinet Model: Experimental and Numerical Study

open access: yesApplied Sciences
Given the critical role of electrical cabinets in the post-earthquake recovery and emergency response of nuclear power plants (NPPs), a comprehensive assessment of their seismic performance is essential to ensure operational safety.
Da-Woon Yun   +4 more
doaj   +1 more source

Presenting a simple model to nonlinear analysis of thin steel plate shear wall [PDF]

open access: yesپژوهش‌های زیرساخت‌های عمرانی, 2016
Despite of the adequate performance of thin Steel Plate Shear Wall (SPSW) in last earthquakes and also during studies performed in the laboratories in all of the world, some problems and some defects such as lake of capability of commercial civil ...
Mohamad Ghasem Vetr, Ali Ghamari
doaj   +1 more source

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