In June there is the 16th European Conference on Earthquake Engineering in Greece. Though the deadlines have expired to submit a paper but you can see the topics of the conference to see if you are interested to attend it.
The link is here: http://www.16ecee.org/
Also there is the 20th International Conference on Earthquake Engineering and Seismology in San Francisco and you have a deadline until March 9, 2018 for abstract submission if you are interested.
The link is here: https://waset.org/conference/2018/06/san-francisco/ICEES
For mechanics also in Greece 4-6 June there is the 9th International Congress on Computational Mechanics if you are interested to attend.