Vehicle-body structure of vehicle and manufacturing method of the same

A vehicle-body structure of a vehicle, comprising:

• a first frame member having a closed-section portion extending a longitudinal direction thereof, the first frame member having a dent portion which is formed at an end portion thereof which dents toward an inside of the closed-section portion;
• a second frame member having a closed-section portion extending a longitudinal direction thereof, the second frame member being joined to the first frame member so that the closed-section portion of the second frame member is continuous to the closed-section portion of the first frame member, wherein at least part of an end portion of the second frame member which is joined to the end portion of the first frame member overlaps with an outer face of the dent portion of the first frame member so that a surface of the second frame member and a surface of the first frame member are substantially continuously flat;
• and
• a bulkhead having plural joint flange portions provided at a periphery thereof, the bulkhead being provided in the closed-section portion of the first frame member and joined to an inner face of the first frame member through the joint flange portions thereof,
• wherein a joint portion of the first frame member and the bulkhead includes a rigid joint portion where the inner face of the first frame member and at least one of the plural joint flange portions of the bulkhead are joined with a direct contact thereof and a flexible joint portion where the inner face of the first frame member and at least one of the plural joint flange portions of the bulkhead are joined via a damping member provided therebetween, and
• said flexible joint portion includes a dent-portion joint portion which is configured such that at least one joint flange portion of the bulkhead extends along an inner face of said dent portion of the first frame member and said damping member is provided between said at least one joint flange portion of the bulkhead and said inner face of the dent portion of the first frame member.