research

The present study assesses the applicability of carbon materials-embedded polyurethane (PU) composites characterized by high piezoresistive capability, as a traffic loading sensor. PU composites incorporating multi-wall carbon nanotubes (MWNTs), expanded graphite (EG), and a hybrid of MWNTs and graphite nanoplatelets (GNPs) were fabricated and their electrical conductivities were measured in an effort to determine the most suitable filler type for the piezoresistive sensor and its optimum content ratio.

In this work, a novel film heater in nanometer-scale thickness based on catalyst-free and transfer-free carbon nanosheets (CNSs) with properties similar to graphene is fabricated. Here, poly(amic acid) (PAA), which is composed of several aromatic hydrocarbon rings, is used as the carbon precursor of CNS films. Altering the polymer concentration easily controls the morphological, optical, and electrical properties of the CNS films obtained by carbonization of PAA thin films.

What is best way to seach for postdoctoral position or faculty position in USA?

I am aware that in iMechanica some positions are posted but the number of positions is limitted. I would appriciate any advice from people in the US. Thanks!

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I want to draw the mass gain curve over time, it follows the Fick law but the results I obtained are either instantaneous or ramp.

how to draw?

thank you

I am trying to model a rigid box which deforms into a parallelogram on application of

displacement/velocity. I have made a box using 4 rigid plates ,but when I apply

the shear force the plates lose contact. I have used no seperation technique 

it didn't help .kindly give a solution asap.

Paper Accepted for Publication in International Journal for Numerical Methods in Engineering

Linear smoothed polygonal and polyhedral finite elements

A. Francis, A. Ortiz-Bernardin, SPA. Bordas, S. Natarajan

By: A. Deraemaeker and Payam Soltani
Abstract:
Pendulum tuned mass dampers (PTMDs) are used to passively mitigate the vibrations of tall structures and buildings. The main objective of this short note is to introduce analytical formulae for the optimum design of the linear PTMD coupled to an undamped primary system. Den Hartog's equal peak method is applied to derive the optimum design. With the mass ratio between the primary system and the PTMD, the optimum length and optimum damping of the pendulum are calculated. The formulae are presented in both dimensional and non-dimensional forms and are simple to apply in real applications. It is also shown that the vibration mitigation performance of the proposed optimum design precisely matches the results obtained by numerical optimisation techniques.
doi: 10.1177/1464419316652558

https://www.researchgate.net/publication/303716296_A_short_note_on_equa…