This study aims to investigate how to assess the formability of the plane fabrics around the curved surface. When the spherical surface coated with a paint in advance comes into contact with a plane fabric, the paint on the spherical surface is transferred on the fabric. The fabric is spread in the plane again, and then the fittability of the fabric to the spherical surface was assessed by the painted region. The results are summarized as follows:
(1) If a spherical body is pressed down onto a fabric stretched and sustanined in a horizontal frame, a transferred shape becomes larger similarly in size, remaining the circular shape, with increasing the pressure of the spherical body. However, a circular transferred shape transforms into an amoebic shape yielding the projection in the radial direction.
(2) The characteristic limits and the shapes are constant regardless of the radius of the spherical body.
(3) The fittability of the fabric to the curved surface are different by the kind of fabric, and in particular, a certain relation has been found between the shearing property and the transferred shape.
View full abstract