Composite vibration-damping body and metal-spring-equipped composite vibration-damping body using the same

A composite vibration-damping body comprising a first elastic body and a second elastic body overlapped with each other, wherein

• the first elastic body is formed of a material having higher attenuation than that of the second elastic body,
• the first elastic body includes a recessed part opening onto a surface of the first elastic body, and the recessed part forms a gap, and
• a strain concentration part configured to be subjected to an increased strain during load input is set to a wall of the gap of the first elastic body, wherein
• the recessed part opens onto an overlapped face of the first elastic body with the second elastic body,
• the second elastic body includes a convex part inserted in the recessed part,
• the convex part is partially in contact with an inner face of the recessed part, and
• the gap is formed between the convex part and the inner face of the recessed part.