Results 31 to 40 of about 112,676 (303)

Infinitely stiff composite via a rotation-stabilized negative-stiffness phase [PDF]

open access: yesApplied Physics Letters, 2011
We show that an elastic composite material having a component with sufficiently negative stiffness to produce positive-infinite composite stiffness can be stabilized by the gyroscopic forces produced by composite rotation.
Kochmann, D. M., Drugan, W. J.
openaire   +2 more sources

Rotational Behavior of Column Footing Joint and Its Effect on the Dynamic Characteristics of Traditional Chinese Timber Structure

open access: yesShock and Vibration, 2018
Chinese heritage timber buildings are of high historical and cultural values. The column footing joint is an important connection influencing the structural performance under dynamic load.
Shujie Qin, Na Yang, Lu Dai
doaj   +1 more source

Experimental Study on the Rotational Stiffness of Pocket Type Scaffolding Connection According to the Rotation Direction

open access: yesApplied Sciences, 2023
The rotational stiffness of the pocket-type connection used in system scaffolding to join horizontal members and vertical members was evaluated. To investigate the rotational stiffness of connections when subjected to bending moments in the downward ...
Dae-Hyun Chung, Jeong-Hun Won
doaj   +1 more source

Influence of the column web panel behaviour on the characteristics of a beam-to-column joint

open access: yesJournal of Civil Engineering and Management, 2013
The paper reviews the importance of evaluation of actual joint behaviour during the design and manufacture of frame construction. The authors applied the component method, which is used in Eurocode 3.
Alfonsas Daniūnas, Kęstutis Urbonas
doaj   +1 more source

Characterization by full-size testing of pultruded frame joints for the Startlink house [PDF]

open access: yes, 2015
Presented in this paper are test results to determine the moment-rotation characteristics of joint details for a portal frame specific to a pultruded fiber reinforced polymer assembly for the Startlink house.
Mottram, J. Toby, Zafari, Behrouz
core   +1 more source

Bisector and zero-macrospin co-rotational systems for shell elements [PDF]

open access: yes, 2015
A principal issue in any co-rotational approach for large displacement analysis of plates and shells is associated with the specific choice of the local reference system in relation to the current deformed element configuration.
Acriniega   +31 more
core   +1 more source

Stress rotation – impact and interaction of rock stiffness and faults [PDF]

open access: yesSolid Earth, 2021
Abstract. It has been assumed that the orientation of the maximum horizontal compressive stress (SHmax) in the upper crust is governed on a regional scale by the same forces that drive plate motion. However, several regions are identified where stress orientation deviates from the expected orientation due to plate boundary forces (first-order stress ...
openaire   +4 more sources

Dynamics of a Monolayer of Microspheres on an Elastic Substrate [PDF]

open access: yes, 2015
We present a model for wave propagation in a monolayer of spheres on an elastic substrate. The model, which considers sagittally polarized waves, includes: horizontal, vertical, and rotational degrees of freedom; normal and shear coupling between the ...
Boechler, Nicholas   +2 more
core   +3 more sources

Relationships between posterior shoulder muscle stiffness and rotation in patients with stiff shoulder

open access: yesJournal of Rehabilitation Medicine, 2010
The aim of this study was to investigate differences in muscle stiffness between subjects with stiff shoulders and controls, and to determine the correlation between posterior shoulder muscle stiffness and range of motion of rotation.Prospective, cross-sectional study.Twenty subjects with stiff shoulder and 20 healthy subjects.Range of motion of ...
Hung, Cheng-Ju   +3 more
openaire   +4 more sources

Spectral Assessment of the Effects of Base Flexibility on Seismic Demands of a Structure

open access: yesAdvances in Civil Engineering, 2016
Base flexibility of structures changes and can increase the demands on structural elements during earthquake excitation. Such flexibility may come from the base connection, foundation, and soil under the foundation. This research evaluates the effects of
J. Borzouie   +4 more
doaj   +1 more source

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