The unique characteristics of auxetic materials has attracted significant attention in the research domain. Its distinguishing negative Poisson’s ratio has found its way to targeted applications where normal materials fail to deliver the expected results. The manufacturing of macro sized auxetic structures has always been a challenge. This paper proposes the possibility for mass production of auxetic structures. Materials available in standard shapes are utilized to manufacture the auxetic structure. A new re-entrant cubic auxetic structure is developed, analysed and fabricated. This auxetic structure provides a better scope for mass production.

The motion of a part on a curved surface mounted upon a linear vibratory feeder is of great importance in mass production. In this article, the conveying surface or track is modelled by a bilinear surface inclined to all axes with the curvature varying throughout the surface. An experimental test rig is fabricated to study the part motion on the feeder surface. Dynamics of the part on the surface is derived and the path traced by the part is obtained numerically. The numeric model closely correlates with experimental results. Based on the control parameters two distinct regimes—slide and hop—are presented, highlighting their relation to frequency and amplitude of vibration of the feeder.

No abstract