Three-Dimensional Structural Modelling of Multi-Storey Buildings for Obtaining Moment Envelopes

2009 ◽  
Author(s):  
T.M. Nahhas ◽  
M.H. Imam
Keyword(s):  
Three Dimensional ◽  
Structural Modelling

scholarly journals Three-Dimensional Structural Modelling and Calculation of Electrostatic Potentials of HLA Bw4 and Bw6 Epitopes to Explain the Molecular Basis for Alloantibody Binding

2015 ◽  
Vol 99 (2) ◽  
pp. 385-390 ◽  
Author(s):  
Dermot H. Mallon ◽  
J. Andrew Bradley ◽  
Peter J. Winn ◽  
Craig J. Taylor ◽  
Vasilis Kosmoliaptsis
Keyword(s):  
Molecular Basis ◽  
Three Dimensional ◽  
Electrostatic Potentials ◽  
Structural Modelling

scholarly journals Theoretical and Experimental Investigations into a Crawling Robot Propelled by Piezoelectric Material

Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1577
Author(s):  
Xiangli Zeng ◽  
Yue Wu ◽  
Shangyan Han ◽  
Yanbo Liu ◽  
Haohua Xiu ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Piezoelectric Ceramic ◽  
Simple Structure ◽  
Dynamic Models ◽  
Three Dimensional ◽  
Functional Materials ◽  
Experimental Investigations ◽  
Small Scale ◽  
Structural Modelling ◽  
Pipe Inspection

Conventional motors with complicated electromagnetic structures are difficult to miniaturise for millimetre- and centimetre-sized robots. Instead, small-scale robots are actuated using a variety of functional materials. We proposed a novel robot propelled by a piezoelectric ceramic in this work. The robot advances due to the asymmetric friction created by the spikes on the surface. The structural modelling was completed, static and dynamic models were established to predict the moving characteristics, the prototype was built using three dimensional (3D) printing technology, and the models were evaluated via experiments. Compared with conventional inchworm-type robots, the proposed robot is superior in simple structure because the clamping components are replaced by spikes with asymmetric friction. Compared with SMA (shape memory alloy) actuating inchworm-type robots, it has a faster velocity with higher resolution. Meanwhile, the components are printed through an additive manufacturing process that is convenient and avoids assembly errors. This design could make contributions to many areas, such as pipe inspection, earthquake rescue, and medicine delivery.

scholarly journals Arch 002

Cubic Journal ◽  
2020 ◽  
pp. 182-201
Author(s):  
Fernando Bales ◽  
Keyword(s):  
High Density Polyethylene ◽  
Design Research ◽  
Three Dimensional ◽  
Digital Fabrication ◽  
Digital Design ◽  
Structural Modelling ◽  
Creation Process ◽  
Modelling Techniques ◽  
Drainage Pipe ◽  
Concrete Casting

Arch 002 describes a design research investigation using off-the-shelf high-density polyethylene drainage pipe as a flexible concrete casting formwork through a process oscillating between digital design, physical fabrication, and digital fabrication methodologies. Through this process, the project team generated hypothetical architectures that serve to further develop their material counterparts. Drawing on contemporary casting technologies and historical structural modelling techniques, the experiments suggest a system for the encoding mass and force into three-dimensional forms, creating structures that serve as drawings of their creation process. Exploring notions of the readymade and postprocessing, the research explores iterative processes of making to transform normative construction components into transcendent material experiences.

The orbit of Pluto over a long interval of time

1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer
Keyword(s):  
Periodic Orbit ◽  
Numerical Integration ◽  
Restricted Problem ◽  
Three Dimensional ◽  
The Third ◽  
Circular Restricted Problem ◽  
Resonance Relation

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.

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